I have many NFTs that I have purchased, and although there was no license agreement (just as with signed prints), it is reasonably expected that I may display that art (on my digital or physical walls, or in some other fashion).
I can of course sell these tokens to others (again, as with signed prints), but if I attempt to copy/clone the tokens and distribute more, I enter into legal/ethical grey area (again, just as with signed prints).
But... There's no legal grey area? And the ethical grey area doesn't need NFTs - that could be served just as well by the artist asking people other than the buyer not to copy it?
You cannot then sell copies of it to someone else. (well you can but not legally.....)