Yeah, that is pretty rude.
As for whether it's OK or not... it seems there is no such thing anymore. As long as a print is not unplayable... and maybe even if it is, the house that first plays the film (and generates most of the print's income) seems unlikely to attract negative attention from the studio for its print handling "expertise".
The depots are no help in this regard, because they've turned their product into an "ala-carte" list of services. Mounting, storage, shipping/receiving, checking to see if all of the reels were returned, inspecting and cleaning are all individual services that must be specifically ordered and paid for by the studio. If they don't ask for it, the depot will just cycle the print on to the next theatre, regardless of its previous handling.
There are some serious offenders in our area, and the local depot, much to their credit, tends not to send us prints from those theatres. Still, we get a couple each year that I have to get replacement reels for. What's really sad is that some of those replacements are for actual print defects that should have been fixed with the first theatre. Those defective reels were played through the entire first run without anyone noticing, or caring about the substandard presentation they were providing for the public... but that's another (long) thread, eh?