Areloch said:
I have a Mistakes Will Be Made attitude to all this.
You really can't expect someone to figure out how to perfectly nail diversity without a lot of trial and error. If you're a writer who believes there should be more gay characters in fiction, then you put them in there and try to make it work. People see your work, respond to, praise the bits worthy of praise, point to mistakes, suggest corrections, etc. You try again, hopefully doing a better job of it.
If you get noticed by your peers, maybe they decide to give a go, too. They bring a different sensibility to it. They get feedback after it's published.
Maybe a gay professional thinks, "no, no, no, that's not how it is at all" and they come in with their perspective. People in the audience get inspired by it, they come in and open up their brains. Everyone is learning and growing and getting better at portraying gay people in fiction. Some folks aren't confident about their ability to write gay characters, but are on board, so they make sure they put gay characters in the background of their work.
What you call Tokenism might be the thing which inspires someone to write. Maybe it's because they felt included for the first time in their life. Maybe they're just insulted by it and want to show how it really is.
This stuff just doesn't spring forth fully formed. It's a long arduous process involving tons of different people, often riffing on one another's work. Yes, I can point to works where a gay character is horribly shoehorned in and say "if you're a writer, you don't want to be doing that", but that doesn't mean that wasn't a valuable step in the learning curve. Hell, that might be a valuable lesson in What Not To Do... like the movie, Cruising.