I'm not pisseh about a couple mean posts. I do that myself.
"I hate people" was going way too far in my book.
While I agree the term "hate" is used much too loosely in today's world, you can't do much but give a reminder. Why, today I met someone while I was walking and they were talking on the phone to someone. They said they hated their boss, so I looked at them and said "Hate's such a strong word, and such a piety thing to waste life on". Granted, they looked at me like I was crazy and walked away, but it did the trick.
In any case, you'll find that almost all the time "Hate" is used in poor context. It's no reason to get angry, especially if you don't know the person. They could be very kind and just joking, or having one of those days. First impressions are important, yes, but they shouldn't be the last one. Take my word for it, Ducky is a very nice boy and a great friend once you get to know him. c: