It's a difficult subject in this space.
On one hand, a big part of this kink for many is the female partner fucking someone bigger and better than her usual partner. We can't deny the taboo nature of many kinks, and if all participating members want to lean into the "black superiority/BNWO" play in the bedroom then as long as all members are aware it's just fetish talk and don't actually believe in racist views, then that's one thing. I think the problem arises with the roleplaying/fetishism online. While some people might just be turned on and fetish talking, other people will see it and not know it, and like with everything on the internet, someone will take it literally and from there it will spread.
Are there racial roots in this kink? I'd say absolutely so.
Can it still be participated in a safe and healthy way if you are aware of those roots and seek to exclude them from your lifestyle? I also believe so.
Personally, I think big dicks look better and generally they're better for sex. I also think black dicks going into white pussies looks hot. Put those 2 ideas together and here I am. Do I think all black Men have huge dicks? No. Do I think they fuck better for animalistic reasons? No. Would any of my behaviors outside of the bedroom indicate hate or favorability towards one race or the other? No. But in the bedroom that's where my preferences lie.