I have been one of the most vocal opponents of NFTs and other such worthless crap. However, who am I to say that someone else's use case of bitcoin is wrong, and preventing them from using bitcoin in this way? What's to stop someone else coming out and saying that my use case of bitcoin is wrong, and trying to do the same thing to me?

This of course ignores the fact that even if you banned this particular method for embedding data in the blockchain, then there are other ways to embed data in the blockchain that we cannot ban, such as within signatures.