No. It’s not like affirmative action, where you’re giving PoCs privileges for historic injustice. In this case you’re giving them just for the colour of their skin.
Alternatively, by your own logic, if it is anti-racist, then it at least “Strongly resembles” racism, anyway.
It’s quite a catch, that 22.
Gosh, why ever would any minority want to hang out at a place where they get attacked just for being who they are?
That works for trans posters, and it works for PoC posters on a board where “Why are Africans congenitally retarded” (paraphrased) was considered a valid Great Debate topic.
We all know why they left. They were not a majority of, or even a plurality of, the PoC on this board. You can’t extrapolate from them to other PoCs just to suit your tired argument.
I do know other PoCs’ reasons for leaving, or just only posting outside GD, because they told me.
Because, like I said, it had a lot of open racism that was tolerated by the mods at the time because it was politely worded. There’s less now, because of some GD rules changes and some bannings, but there are still quite a few outright racist posters tolerated here.