There is only ONE double standard here and that is the one you are defending. In the real world gays represent about 5% of the population perhaps? Yet you seem to expect an unrealistic proportion of content to be made to specifically appeal to that piece of the market. That's not accurate representation. That's not some sort of achievement. Of course you're going to have to lower your expectations when those expectations aren't grounded in reality. That's life for everybody. But I suppose you'll just claim I have "straight privilege" or "white privilege" or some other nonsense. One moment you'd speak of "respect" and in the next you'd dismiss other viewpoints as "privileged". Do you think those in question have never had to work for a living, never had to deal with any challenges, are less worthy than others? That is nothing short of arrogance as is this entire postmodern use of the concept of "privilege".
Just so I'm clear here, you think that society at large treats LGBT people equivalently to people like you and me, and that neither group is the victim of systemic, targeted attacks based on their sexuality. I'm less aware of people being murdered or picked on because they are straight.
Further, as a straight person, there's nothing stopping me from still wanting to play LGBT content. About 15% of the people pick evil choices, yet we still try to give more than 15% evil choices in our game, so the demographics argument is a red herring and irrelevant. Unless your argument is that we shouldn't be very fair towards them either.
If you consider the term privilege to be disrespectful, then why isn't it for me? I'm a straight white guy and I can recognize "by being straight, white, and a male, I am granted some opportunity and have the benefits of a legacy in North America where myself, and my family, are not overcoming issues with systemic discrimination based on the fact that I am white, straight, or a man. Particularly in North America.
Sure, people have to work for a living, and presumably work hard. I've never said anything like that, but you misunderstand the term privilege. It doesn't mean "life is as easy as can be with no challenge." It if I take the challenges that I have in life, there's a greater chance that I'd have had to face additional challenges on top of that if I wasn't a straight, white person. It doesn't mean that life is as easy as can be for me. It means though, if I get pulled over by a police officer the odds are I can get away with a warning more easily. It means that if I get stopped for a "random" check at customs, there's likely a very clear reason why (i.e. I filled out my declaration incorrectly). Heck, if I forgot something and went running in an airport... people aren't going to blink an eye. It means that my dad's parents didn't have to worry about their property being devalued simply because a non-white person moved in as a neighbour, meaning that when my grandma died, there was a bit more inheritance money that went to my parents to take care of their debt, and as such my inheritance will be a bit better because my parents will have more equity when they die. All because they don't have a legacy of having to deal with the implicit racism that would devalue their property because some racists felt that a black person living in their neighbourhood was undesirable. This is the type of thing that makes "I'm sure he's a nice person" types implicitly racist, because they also see "But I just lost a few thousand dollars of equity because he moved in beside me!"
Note that this doesn't make me feel like I should feel guilty. But I do think that I should feel aware, and make a conscious effort to enable the benefits that I am able to enjoy across all people. But hey, that makes me "arrogant" in your terms, so there's that I guess?