I don't know much about NFTs, but I understand it as a sort of "certificate" (?).

Like buying the rights of an old album; an album for which the original is lost. I might receive some piece of paper that says the songs are now mine. Of course, there are already thousands of copies of the songs, but (somehow) now the songs are mine, and I can certify it.

> but at the end of the day, they are digital tokens

I can simplify everything up to the point of saying that the 10 bucks bill you have in your pockets is just a piece of paper, but we all know it's more complicated than that.