> "security enhancement" - more like arbitrarily preventing people from taking out the contents of their account to prevent the crypto version of a bank run, because crypto in general is having a meltdown/catastrophe.

Whether it's arbitrary or not depends entirely when it was instituted. If it was instituted today (in the wake of all the other withdraw freezes), then I'd agree it's shady, but according to google cache the page existed since at least last friday which sort of works against your theory. Also, as someone who used cryptocurrency exchanges (not coinbase pro), waiting periods for withdrawing to new addresses isn't unusual.