Like I get what your saying and that's fair and all, but it's totally valid to wanna see more representation of race and orientation and it can be a really important part of a person's experience with the game.
Like plenty of people can play this game with the characters being nothing but mechanics, they're here for the gane without narrative, without story, without immersion, so having trans or poc folk in the game shouldn't matter to them, they're still just you know, a set of abilities to play as.
But then there's players like me who need immersion, and to be able see a bit of themselves in there character, like yasuo is an extremely fun champion but I don't think I personally could play him if he had rivens model, it'd break immersion.
So since I can get my immersion experience why not everyone else? It shouldn't really affect anyone who only cares about the gameplay.
And league is crazy exspansive, you can't tell me that in a world with ancient shuriman gods, giant kraken deities, and over world aliens, that there aren't humanoids that reject the gender spectrum.
People interpret fun in different ways, and we all wanna have fun, having more diversity only adds to that ^^