Yes I totally agree with you. When this whitelist/blacklist stuff came to my awareness it didn’t sound right so I looked it up. And it seems totally unrelated so it’s a made up problem to solve.

I also agree about there being nothing wrong with the word master, in the context of mastery of a craft etc.

But with databases, a slave often replaces the master if the master stops working. That simply never happened in real life so it’s not even close to an accurate set of terms.