The problem I’m starting to see is that the continued use of phrases like this (master/slave, blacklist/whitelist) can be a constant reminder to some that they “don’t belong here.” Obviously, in this context, they aren’t meant to be racist; but they are a reminder that racism exists. The end result is that it makes more people feel unwanted and ultimately leave tech.
Yikes. "Blacklist" has nothing to do with skin colour. In a different context, "being in the black" is a positive situation and contrasted with "being in the red". We start down that path and we'll end up banning "Paint it black" as a racist song.
The related term is "whitelist," not "redlist." So I can understand why people might believe the pair has racial overtones.