Yes, sorry, I'm being a bit sarcastic.
The idea is that there are only some 'approved' writers. If you can't write as a white person about other races, and you can't include other races without being accused of appropriation, then the only logical solution for white writers is to ... not write.
I do understand some of the arguments, fwiw. That 'lived experience' does matter. I remember arrogantly writing about motherhood before I'd been a mother, for example, and that piece would now make me cringe very hard. I can see that argument applying to other areas that I can't and won't ever experience. And certainly there are lots of disadvantages within writing/publishing that make it harder for some voices to be heard, and those need to be addressed. Class, income, caring commitments, race, educational background, etc. Otherwise we risk having a very narrow sliver of the populace involved in the arts.
On the other hand, the whole exercise of fiction is an exercise in empathy and imagination. It's maybe not the 'end point', maybe it's a way to learn or reach an understanding even of our own blindspots and shortcomings.
The solution to this is not to issue approval permits to those who fit the proper criteria of an ever tightening purity spiral, but to encourage a plurality of voices so that we could all hear more and listen more and develop more tolerance and understanding. Cancel fewer writers; encourage more.