Let's replace "I'm a gay" with "I'm a vampire". Mr. Tuomas Yirvik, a new champion, is a vampire.
Ok, Mr. Yirvik, what do you have going for you?
"I'm a totally badass vampire, bitch."
:O That's awesome! How do you do your vampire things? Do you lure people into a false sense of security before draining them or just go in teeth bared and to hell with the consequences or something else badass entirely?
"I'm a totally badass vampire, bitch."
Um, ok, that doesn't really any my question but it's still awesome. Are you fighting here for a serious reason or are you more or less just here for the blood and lulz?
"I'm a totally badass vampire, bitch."
Uh, is your favorite color red?
"I'm a totally badass vampire, bitch."
Do you have any personality whatsoever?
"I'm a totally badass vampire, bitch."
Not everything has to be serious. For fucking sake, Storm Spirit exists and is loved, but that said, it is refreshing to have a gay character like Kanji from Persona instead of assuming that the only way to have an openly gay character is to portray them like a Family Guy gag.
There's nothing wrong with that inherently, but if your goal is to increase diversity to set a precedent then, damn it, the character should carry themselves with more respect and the designer should respect the group. That's just common sense and common decency.