so many popular examples of fandom racism are barely actual fandom brand racism bcs white ppl (and honestly too many non black ppl) need outright in your face blatant stuff as proof to shocked and appalled by. most of it is the classic "I'm not touching you style" that's easier to gaslight around which is what a majority of racism is, gaslighting. slave fics a tortureporn of characters of color are awful but that's like individual weirdos who it's easy to mark off as obviously racist. The attention and outrage surrounding these little incidents allows everyone to feel better because of how exaggerated and one off they are, bad eggs in a good batch etc.
Real fandom racism is watching the darkest characters get boxed into the specific outsider pov trope over and over despite them being a core member of the cast. it's watching everyone have in depth headcanons for every character but them, denying them the complexity their counterparts get. It's them getting written out of their own plots, receiving little to no audience sympathy when they ARE complex, and, most importantly, watching them get cast in the same exact role when shipping comes in
but all this isn't loud, it's quiet and unnoticeable unless you've had to watch it play out with every favorite character you've had ever since you were ten and started engaging with fandom. it's repetitive, uncreative, infuriating and worst of all NOBODY WILL LISTEN WHEN YOU POINT IT OUT because you're just imagining it and they're not touching you. I've been making my own content and I've seen how people will go out of their way NOT to engage or engage specifically only to discredit a character of color.
it's not a one off thing or even a small pattern, it is what fandom culture is BUILT on, picking the palest skinniest most pathetic looking man in the cast, projecting onto him and ignoring literally everyone and everything else whether that be fanon over plot or the interesting female or darker skinned characters and masking racism behind fanon tropes