The main (and dangerous) difference with the NFT stuff is that society doesn't agree any of this stuff is valuable. It's a bit like what happens when a conquering power comes in and existing land titles become meaningless. A good example of this was real estate moguls in prewar Japan, many of whom had spent centuries gradually accumulating land tenancy over tons of other people - but as soon as WW2 happened, one of the big changes that transformed that country was that all of those land titles were simply dissolved.

Just, -poof-. Gone.

Ownership of that land was simply taken from them, and evenly divided amongst their tenants.

There's a very similar danger with i.e. property rights inside of videogames and stuff - until and unless there's case law about it, I can go into my buddy's proverbial minecraft server, wreck all of his (potentially months of) work, and there's really nothing he can do about it. I might lose a friend over it, but I won't lose a lawsuit.

The illustrative bit about the minecraft server is I'm at the mercy of "the community of people who agrees that thing has value", and in this case, it's one person.