Purging all signs of blackface from a revised edition is a really common sense business move.
Weird enough, as far as I know most WoD players still like the V20 more than the V5. Also what about the sexual predator aspect of vampires? Has that been removed as well? It can't be political correct nowadays to drink anybodys blood without consent, no?
You've definitely caught them in a bit of a contradiction. Vampire literature, in general, is a big analogue for rape. Dracula was a novel about an Eastern European guy preying on white women from Western Europe. If you scrub the rapey aspect you don't have vampires anymore. I suppose the difference here would be that society will ruin your life over blackface but it doesn't yet care about biting people on the neck. You do whatever you can get away with.