Etherium is open-source, so on the surface, there is some common ground.

Technologically speaking, NFT's are just a way of publishing a claim of ownership. Pretty much all FOSS licenses explicitly express ownership of the code, and then outline the acceptable terms of use. I don't see the two as conflicting in that way.

However, the respective communities, are seemingly quite different. FOSS developers are seemingly more concerned about the benefit of the general public than making money. Whereas NFT creators are primarily interested in making money. They are like oil and water in this regard, but that's not always the case.