Yes. That's clear and understood.I'm jumping back in to clear something up:
Cantrip Versatility is one of a series of retraining rules that is intended to solve the problem of people not having a by-the-book rule for fixing mistakes or unsatisfactory choices made when they created or leveled up their character.
@Ashrym's poin (as I read it), and Crawford's point as quoted/transcribed upthread, is that for sorcerers the retraining option was always an intended part of the class, and the spell versatility feature "fixes" it for slow-levelling campaigns where the retraining isn't occurring at the design-inteded real-world rate.
Whereas cantrip versatility is not a fix to an original design feature. It's a somewhat ad ho addition. Which means that it is hardly vulnerable to the criticism that it doesn't work at the intended real-world pace!