In a perfect world, yes. But mechanisms aren’t perfect and it’s entirely possible if not likely that steps will be missed as friction increases over time and things wear.

I’m not saying these things matter much in this context.

The clock will still be far more accurate than purely mechanical version. And, re-synchronizing it is as trivial as turning the knob, just as you would for the all mechanical mechanism.

its a fairly reliably stepper motor system. You're right it will degrade over time, you'd be surprised how many steps it can do before it degrades.