But it does matter and has to do with the NFT. If you put a URL, whose content can change over time, the NFT that effectively be changed. At least what it's poi

But it does matter and has to do with the NFT. If you put a URL, whose content can change over time, the NFT that effectively be changed. At least what it's pointing to. If you're using a content-address hash, you can be sure that you can always get back the same result from that hash as when you got the NFT N years ago.