Now, I don't know exactly what definition of social justice you guys want to use, but I'm going to stick with the one used by the
Green Party because I think it works pretty well with the tumblr sjws we see.
Issues like women's rights (including reproductive rights), social and economic equality, violence and oppression, racial discrimination are ALL important to discuss. These are core issues to the social justice cause, and I do think that these are good discussions to have. People, on all sides, want women to have rights and they want to end oppression and discrimination. Obviously, the cause of social justice
is good, as it really does aim to make people happier.
But I think that people are resistant to these ideas because of the accusatory tone which SJWs take when they talk about these things. As in, people want to end discrimination, but SJWs will talk to people as though they are personally the problem. So when I say "selfish reasons" I mean that people don't disagree with the social justice platform, but they simply feel that SJWs are attacking them or their way of life with what they say.
The first of these then that I think is important to talk about is women's rights. In lots of ways, most people (aka non-sjws) agree with most elements of this. BUT, people
are resistant to discussion about the wage gap, discrimination and consent. For all three of these things, it's because people don't personally see them as a problem and as such don't understand the concern. That is to say, people who are not affected by these issues do not see that they are a problem. People think that because a problem does not affect them, it does not exist. Obviously, this is wrong, but it is totally fair. After all, many sjws don't want to address problems that don't personally affect them or whichever cause they choose to support. So this sort of thinking goes both ways, but it is definitely one thing that makes people not like social justice. Frankly, I don't know if the wage gap exists or not (I've seen plenty of evidence for both sides so I don't really have any reason to think one way or the other), but I do know that some people think that it's an issue. I do know, however, that many people are misinformed on the issues of consent and loveual education. That is, the social ideas that we have about loveual harassment and rape are still dangerous to many people, and many people don't want to talk about rape as an issue.
In a lot of ways, I think that people dislike social justice because they personally feel they are not a part of the problem. SJWs will say things like "1/6 of women are raped in their life" or something like that, and people (on both sides) will misinterpret that. First of all, obviously this statistic shows that rape is a huge and terrible problem. But SJWs who become afraid of men because of this are severely misguided. Regardless, some people will come to the conclusion from this that "men are dangerous". As such, non-sjws will find themselves personally attacked by what the sjws are saying. And this is where much of the animosity comes from. In reality, this statistic is a result of lacking loveual education and a terrible understanding of what actually constitutes rape. People are resistant to the idea that rape is more than just violent rape but actually refers to any love without consent. This is because people are afraid that they will be unjustly accused of rape. The problem then becomes that both sides are going to be arguing about an issue because they simply are not on the same page.
For the most part, people who are anti-social justice feel like they have to take this position to protect themselves. Statistics about rape and discrimination end up with people feeling guilty about something they did not take part in, which is why some people begin to assert that these are not issues. For example, just because you have not personally racially discriminated against someone, that doesn't mean racial discrimination does not exist.
All of these things mean that social justice is a noble goal to pursue. But I think that people lost sight of this (on both sides) when they end up having to defend themselves against perceived accusations. For example, the lady described in the OP is annoying and she is certainly in the wrong, but many people find issues with cultural appropriation. Now, I personally don't understand the problem with cultural appropriation, but if people think that it's wrong, that's their own deal. So the idea of her saying "You're wrong because you're appropriating!" is terrible and stuffty, because she's blocking off this conversation. Aggressive SJ warrioring is what turns people off from the discussion. But some people genuinely believe that cultural appropriation is bad and want to stop it, and I think that can be seen as a noble goal. However, since she went about it in such a stuffty way, that makes it seem like she's wrong and like she's simply being an starfish. So, I dunno, I feel like people want to hate on social justice because they feel like they are personally being held responsible. And I think this happens because dumbass social justice warriors
will hold you responsible for something that isn't your fault. And this is how anti-sjws will end up defending racism and rape and stuff like that, not because anti-sjws want to defend it, but because sjws want to unfairly accuse people of being part of these issues.
Altogether, I don't really know what to say. I see both sides of the issue, but I do think that the ideas behind social justice are great. The problem becomes when people get obsessed about it and talk about it all the time. All that does is makes everyone feel unhappy, and it makes them look like an starfish. People like that live their entire life in this loving mire of unhappiness, because they think that "empathy" means "making people feel bad for issues they didn't cause and things they didn't do". But the ending of oppression and racism and loveism is a noble goal and I think, honestly, most people would agree with these things if they weren't made to feel responsible for things they didn't do.
Edit:
Just because someone is offended doesn't mean they're right. Especially if they're offended about something that doesn't directly have an effect on them.
You're right, but I don't see so much what you're saying. Some people think that cultural appropriation is a problem, it doesn't have to affect them. Similarly, just because someone's annoying doesn't make them wrong.