Re: Makes me glad I'm old, accomplished,
Surely just shutting down any suggestion of change is closer to "totalatarian"?
The word you're looking for is "consistent".
In tech-speak words have specific meanings. They may have been imported from some other context by analogy but once imported they acquire a new significance and it becomes important that they're used consistently. Unless we have consistency it becomes impossible to communicate. That means that if I ever used the term "slave" in documentation anyone reading it then, now or at some point in the future would know exactly what I meant. Even if we were to coin a new term now and use it in the future it would in no way remove the need for anyone entering the field in the future learning what the term "slave" meant in that context; there's too many examples of it being used in that precise, technological sense to do without it.
Your opening sentence is a perfect example of the pitfalls that are caused by lack of precision. It's clear from the fact that you think "replica" is equivalent in meaning to "slave" whereas they actually mean two different things. To try to impose the one term in place of the other would indeed be buggering about with the terminology if not with the actual language.
Perhaps you've wandered into this conversation from marketing or management where precision of expression is a disadvantage, exposing as it does an absence of meaning.