So how many games provide an option to hide cosmetics that other players are using?
Iam not a real gamer anymore but in World Of warships there are serveral crossover skins (like from animes) that some people love and use and others hate them and are able to turn them off completely.
https://worldofwarships.com/en/news/sales-and-events/arpeggi...
Back in the days we used mods and texture packs to remove (hardware) expensive textures from the game so we get more FPS. I'm not sure if your argument applies to all games. For many games there is a competitive scene that usually don't give a shit about visuals and would trade most visual features for more frames per second.