see the thing is that when poc enter fandom, they assume that it would be a "safe space" which is bogus lmao because fandom is made up of the same people who make the real world unsafe for poc right? so why do we think that? because we see some of these people on our dash everyday and they become like familiar neighbours who like you and treat you kindly on an average day. they resonate with your headcanons, you exchange jokes about the blorbo and very slowly you start making friends who understand the overlap between irl racism and fandom racism - imo the more time you spend with your chosen fandom friends, the smaller but surer your safe space becomes.
then there are white people in fandom spaces who are used to being the majority, never having had their biases challenged because lbr leads in most shows are overwhelmingly white.
when these white fans from primarily white fandoms come over to fandoms with poc leads - they don't know what to do. these fandoms usually have a lot of pocs who have gravitated towards that piece of media because they're getting some decent rep for a change.
in short, the white fans and their opinions and their way of moving about in fandom isn't the status quo anymore.
usually one of these things happen as a result -
1. some white fans get exposed to a new way of thinking, get their ideas challenged, learn some new good and bad things about themselves and their privilege in fandom spaces
2. a few white fans start enforcing their white ideas from former fandoms and try to make the new fandom "fuss free" - aka make it purer, slough away all the edges from the poc leads so the blorbo is in a shape and form they feel comfortable interacting with. instead of learning something about a 3d dude (gn) with flaws and issues, they try to level the playing field by making this poc blorbo like all their other blorbos. Problem Solved!!! now they can never make a misstep or accidentally commit a racial faux pas because absolutely every nuanced take on the poc guy will be challenged until it conforms to their comfort space.
3. fandom being fandom, pocs end up disagreeing on headcanons as much as we do on what is/isnt racially insensitive. we forget white fans, we're finally in a place where ideas can be exchanged amongst people who have a lived experience with this stuff. some of us are steadfast in our opinions, some are "agree to disagree" and then there are million other types with their own takes - we aren't a monolith.
4. a bunch of white fans take the ideas being discussed personally - they start taking sides not on the actual debate happening but on which poc they agree with more. there is a strong element of "i'm not racist so i guess i'll with with A over B just so people don't think im one of those white people." a lot of these white fans are WAY over the top because for once, it's not about them and that's hard for them to handle because "well you're calling me racist so!!!"
i don't really have a point with all of this, it's been a hard few days and i wasn't even directly involved. what i'm trying to say is that a poc fan trying to distance themself from a conversation they don't feel strongly about doesn't make them someone who doesn't care about racism - this is our life day in and day out, we're fucking allowed a break from it.
we are allowed to block (and i don't just mean poc here) people who are using us to score fandom points and do not give a fuck about trying to correct their biases.
we are allowed peace and i'm sorry if that makes you feel ostracised - maybe focus more on how you can be a better ally or hell, be a kinder person worth having a discussion over. i have several white friends who listen to me when i bring up issues around racism in fandom, i know it can be done. if you're getting blocked, maybe the fault lies with you being unable to listen and steamrolling anyone who makes an attempt to do so.
maybe idk just maybe, try that instead of trying to win some popularity contest where you're the sole participant.