This is really the problem, digital ownership outside of asymmetric cryptography is not well defined in law. Digitally, it is perfectly clear: You own the NFT

This is really the problem, digital ownership outside of asymmetric cryptography is not well defined in law. Digitally, it is perfectly clear: You own the NFT. Through what is written on a tweet and a website it can be interpreted as the representation of Jack's tweet. You don't have any further owenship or rights.