I wasn't aware one could get 'practical experience' "instantly." I would assume that their instant change of heart owes more to other factors. Perhaps concern over the source of their next paycheck? You have admitted you just "forced" them to do this. Isn't the question then, why didn't they do it before? Shouldn't you answer that before you prognosticate?
> that junior developers will still be needed, if nothing else because they are open-minded about LLMs
You're broadcasting, to me, that you understand all of the above perfectly, yet instead of acknowledging it, you're planning on taking advantage of it.
> I think the equivalent of cruft is ignorance
Exceedingly ironic.
> Will two-pizza teams shrink to one-pizza teams
The language you use to describe work, workers, and overcoming challenges are too depressing to continue. You have become everything we hated about this profession.