Maybe it's the fact that TV is a one way medium without the ability to interact with the people on it with the added fact that all reality style television is known for its deceptive editing which is purposely done to make the shows appear more dramatic than they are (all reality TV is guilty of this). I know that this is definitely part of some issues being brought up here.
All I can do is speak from experience, and being that my godmother is a lesbian as well as my mother's first girlfriend I've spent my entire life growing up around LGBTQ culture, I attended my first pride parade at 7/8 and it was wonderful. That being said, due to the time spent with the LGBTQ community I've known two men who performed as drag queens at clubs. They were both dear friends of my family and as an inquisitive child I asked one of them why he liked to perform dressed up as a woman. I'm 33 now, so it's been almost 2 decades since I asked so please forgive my paraphrasing. He gave me the most sincere smile and told me that he thought women were absolutely beautiful, and the biggest role models in his life had always been strong, outspoken women who not only took everything life threw at them but survived carrying themselves with a dignity and grace he wished he'd felt as a child when he was being picked on and beaten for being effeminate as a kid. Basically he wanted to channel all the strength of his women heroines because they got him through the toughest times in his life - and did it while looking amazing.
I remember how sincere he was when he told me that he truly believed that women were much stronger than men - we put up with so much, we kick ass, and are elegant and beautiful to top it all off. This man was not a misogynist, he truly loved women and when he performed his lip syncing at the club where he worked he got to live as the strong heroines who helped him survive his darkest times, if only for a night once or twice a month.
This is already novel length but I'll just end this by saying that I've met some very bitchy gay men that did not do drag at all. With every group of people you get some good - some bad. The bitchy gay men I met weren't trying to emulate women at all, they were just ugly inside. So I'm sure there are some awful drag queens that are terrible people - but that creates drama doesn't it? And drama creates ratings so maybe they're choosing these type of offensive drag queens to drive ratings. I don't really know, all I know is the drag queens I've met loved and admired women.