I take up all of sebsauvage's points and translate them:

1) An NFT being only a pointer, the owner of the domain used in the pointer can change afterwards the pointed data.
2) Worse, one can even return different data depending on who comes to retrieve the resource.
Yes, the URL of this NFT registered in the blockchain is unalterable, but the data pointed to by this URL can change.

But worse than that:
3) Almost all applications rely on APIs like OpenSea to display the contents of these pointers. But there are few such APIs, and they have in this case removed the Moxie NFT pointer.

The URL of the Moxie NFT still exists in the blockchain, but the APIs no longer return it. This is a form of censorship.
The decentralization of the blockchain is completely negated by the centralization of the APIs.

And finally to add to the ridiculousness of NFTs:
4) One can very well register this URL in other blockchains (there is no such thing as a single blockchain).
5) The inscription of a URL in a blockchain does not mean ownership. It's just data. The blockchain is a register (public and unalterable). The way this data is interpreted is not imposed.