I’ve had this recently on Deore cranks on the commuter I built up.
It’s fine now, I removed a spacer from the drive side to show a bit more crank, cleaned everything to make sure it was all pushing up correctly and paid a lot of attention to correct tightness of preload cap and crank arm bolts.
As long as you didn’t put too much force through the cranks and do a proper job it should be fine, I’d have thought.
EDIT: Pics didn’t come up for me the first time I posted. Those look a bit far gone imo, don’t think you’ll stop them working loose, but you might be able to mitigate it to a certain extent with proper setup.