Hot take: Even if this person is black, like, fuck off anyway?
Tyler Perry is black and mostly preaches boomery black Christian agendas and has weird colorism shit where the dark skinned black people in his movies are the asshole wretches and the lightskinned people are either the saviors or victims and such. (Colorism is a deep cut issue within the black community that there's no need to get into in detail, but, it's something Tyler Perry is criticized for).
I also meet white washed black people perpetually, who have the same fucked up racial opinions due to the people they're surrounded by who regularly do this weird subtle gaslighting by making you feel as if they're your friends and you aren't really black, etc. So you start thinking all the black things about you are negative, and you don't "fit in" with black people because you aren't "like them".
Additional Citation: I WAS LITERALLY ONE OF THOSE PEOPLE FOR OVER A DECADE
Or hell, motherfucking Bill Cosby. Before he was a known shitheel for drugging women, for decades he pretty much shamed any black person who didn't fit squarely into his definition of what black people should be. This has been a common Bill Cosby criticism for fucking ever. In A Different World, the first season is a Cosby written season. It's his ideal boomer ass vision of black college. Immediately after that, a young black woman, Debbie Allen, took over the show when the producers were told that this show was inaccurate as fuck, and from season 2 onward the show actually becomes good, and Cosby has nothing to do with it. But my point is, Cosby weaponized his blackness and white Americans could look at him and say "well, if a black guy is saying it, must be true..."
Being black and weaponizing your blackness against other black people is a big fuck off from me. I firmly believe that POCs, LGBTQ people, and whatever else, should express themselves however they want if it isn't hurting anyone else. I don't think anyone should have to be a certain way to be accepted, I don't believe in respectability politics. You want to be a Carlton nerd? Go ahead. You want to hang your pants down and wear a durag? Go right ahead (actually I'm currently wearing one, my hair needs that shit).
Hell I'm not even gonna shame raceplay, everyone works through their shit in their own way, I'm not even entirely against doing it myself if I trust the person, that shit is lowkey hot.
However, if you're gonna go out of your way to very clearly weaponize your blackness against other black people, or do some shit that is clearly meant to provoke random white people in a way that only makes it harder for black people to interact with them or literally exist, then I've gotta draw the line there. Like, by all means, troll and provoke known racists, but doing shit like that person attempted to do on Arx with people I haven't really heard much of anything bad about only turns people who might not know any better against us, and then I end up having to be the one who suffers the consequences for it.