As an LGBT myself, here's how I feel about it. I have no issue with villains being gay or trans, no matter how despicable that villain is. The problem is when being LGBT is used as evidence that that character is evil. In other words, "I'm a villain, and also gay"? Fine. "I'm gay, and therefore a villain"? Much less so.Not to mention you can't have the gay person doing anything unfavorable. Like there is a big complaint that trans people are often villains to a degree in movies and games.
Catherine Full Bodied got ratio'ed by trans people on twitter because the trans character "tricks" the main character into sleeping with them in the game. Thus making it a comedic thing at the expense of the trans character because they had to exist as a villian to trick the main character. This happens in 40-year-old-virgin as well as many other comedy films in which a character has an unexpected encounter with a trans person and it's played off as a, "Hahaha surprised that girl has a dick" joke.
The question for the representation crowd, is could there be a truly dispicable villain in a movie or game that was LBGT and it be okay? Would that be acceptable inclusive to make the character something people love to hate. Or would it be blasted as an excuse to show violence against a LBGT person?
For all the talk about representation, and inclusion, there are some aspects of that representation that the community doesn't want to have any part in.
You can twist anything into a negative, and the internet is well verse on this, so how far should media take the inclusion and representation before the communtiy would back off on it?
For the examples you listed, I do have a problem with them, because tricking someone into sleeping with you under false pretenses is not funny, and the comedy trope of "surprise, she has a dick" is just not funny, to me. It's one of the reasons I have issues re-watching Ace Ventura, despite finding 95% of the movie quite funny.