Without knowing the backstory, and in the absence of more widely expressed quality concerns, this wouldn't deter me.
Yes, it could have been a defective screw or poor assembly.
Maybe some Loctite wasn't applied in error (do they use Loctite?).
Maybe this was right after initiating disassembly. Unlikely, but not impossible.
Seems like RM owners are generally well-satisfied with the quality.
Cheers,
John