I don't know if it counts, but I've noticed the use of Top Chef instead of Master Chef more and more often these days. On the other hand, you have "old masters

I don't know if it counts, but I've noticed the use of Top Chef instead of Master Chef more and more often these days. On the other hand, you have "old masters" referring to great historical artists or colloquially, their artwork, "Masters" referring to golf tournaments, "mastery" when you get better at something over time, etc. None of these connect to a slave concept. The word slave, on the other hand, is more problematic since it doesn't have those other contexts, and always means some sort of subservience. We already went through this exact exercise back when multiple hard drives were referred to as a single master and however many slaves. We still call it a Master Boot Record, but any other boot sectors don't get called slaves anymore. Primary is a perfectly fine word that we're already using in this context nowadays. I'd be perfectly happy if we didn't have a dozen names for the same things. Everything else is secondary.