Unless you're pulling down everyone's pants and inspecting their genitals when they walk into the bathroom, trans people do not outwardly indicate their love. That guy whose picture I linked could very well still have a vagina and walk into a male bathroom, right? How he appears when clothed is entirely doable with just [img=http://puu.sh/m9XNF/5b719c71fe.jpg]http://HRT[/img] or makeup. (The makeup person is a crossdresser and not trans, but a trans person could just as easily be using makeup to change their appearance)
I think that it's almost entirely fair to judge this individual as man by sight, especially considering that the facial hair shows masculinity / proof of hormones. It could be entirely fake though, but at least this individual is taking the initiative to look as what they 'identify' as.
I think that it's fair to say that this issue is significantly more relevant on the MtF side of things than any other. The common argument generally used on the conservative side is females or younger women being afraid for their safety when this guy walks in on their bathroom.
The issue is derived from individuals that look entirely like their actual love i.e. Mr. Man are trying to go into the bathrooms which makes other actual females uncomfortable and afraid for their safety. They do not look like women, they look creepy and frightening in the opinion of many and it's not hate speech or bigotry to say so.
I think that this whole dilemma is overhyped and the majority of the melodrama is coming from the LGBT community. If they make an effort to be passable, then there wouldn't be an issue in the first place. I agree with a lot of the arguments on both sides but I lean more towards the conservative opinion.
I came across this video a few days about by Steven Crowder:
https://www.youtube.com/watch?v=rcUJgbWrM64