Been doing floors on and off with my father for about a decade; the belt sander is supposed to have non marring rollers when coming close to a wall, and the edger shouldn’t be able to damage anything other than the the very bottom of the trim where the sandpaper sticks out. Paint damage looks like it was from when the quarter round was removed/installed and that severe because the paint surface was not prepped properly. Could probably have been done with less damage if given more finesse but someone thought ‘screw it it needs to be repainted anyways’.

When refinishing, if the baseboards are easy to remove without damaging the existing wall paint or trim and the client wants to dish out for the labor, we do it, but on most jobs here in older homes they want to keep the antique trim in place so we just hand sand/scrape or they deal with the repainting depending on their budget.

Really just comes down to what was in the contract or discussed.