> In practice, when a junior wonders why they can't find anything useful when they google or grep for "acceptlist", then what?

Lots of words have synonyms, so that's not a real problem. Sooner or later the search results will catch up, and in the mean time it's always an option for a junior developer to ask a question or figure things out themselves by looking at the implementation.

Not sure what to say to that. For normal corporate use, this would be standard Dilbert-esque silliness. In safety-critical situations, it would be madness.