They are like everybody and because they are like everybody, they also say stupid things and make mistakes, just like everybody else.
For instance:
A friend of mine from school was a bit effeminate but identify as male and heterosexual.
He liked fashion and was also a bit pervy. Once he fell in love with a store (yes a store) and the girl who was working there, so of course he wanted to work there too and they hired him. After a week, he noticed that the girl he liked, who was also his manager, was very close to another female worker and shared the same perfume, so he naively asked if she was her sister and the girl said "No she's my girlfriend" then added "I just hire homosexuals, I don't want filthy hetero in my store" (well it was not HER store but anyway) So of course my friend fell bad, because now he knew that she had hired him thinking he was gay, which was not the case and because he didn't want to lose his job, he said nothing. Things however didn't get better with the other staff, because they assumed he was gay and shy and virgin, other guys started teasing him a lot, telling him they would teach him how to su...eat ice cream cones!!! Stuff like that, to the point it felt like sexual harassment and my friend resigned. Now even if he were gay, harassement is harassement, if the same thing had happened to a girl being harassed by a bunch of older male co-workers, everybody would shout to hang them by the balls. And not hiring people based on their sexuality is illegal.
Second example:
A group of lesbians in a bar are telling a younger woman, that they don't know, that she's not really heterosexual, she just didn't meet the right girl and even if she were, they would make her change her mind.
Come on girls! What are you? A bunch of old pervy? Are you merely repeating what a guy told you in the past?
In both examples, the persons didn't provoke them and were respectful and minding their own business, so don't start sprouting the same things you despise the most from people not belonging to your community.
So my thoughts on LGBT+ communities? Well being part of any group doesn't give you the right to bash, discriminate and harass others, same for everybody. Apart that I don't have any problem with anybody and I think it's sad that even in 2016, they are still dealing with hate and discrimination.