This change barely moves the needle on Black representation in tech, but I think it does, however little. Improving Black representation in tech /barely/ moves the needle on racism, but I too think it does, however little (these are good jobs and I know it's helped me and my family close some of the racial wealth gap).
And just to be clear: It‘s fine to use primary and replica. There‘s no problem with the decision itself. The problem is the idea that caused this change and the people in this thread who just stop short of calling someone a racist, because he would reject the idea that the terminology was racist in the first place.
edit: I‘ve not seen such fluctuating votes in a long time if ever than in this thread.That shows how divisive this topic is. So I‘ll call it a day. As I said elsewhere, I can wait 30 years or maybe 50 and see how things played out. But one thing is for sure, these ideas (that is: the current approach) will eventually disappear by themselves without leaving even a trace.
So yes, it's harmful.