This always comes down to how you understand value.

How valuable is Jimmy Hendrix guitar pick? How valuable is a lok of Justin Biebers hair? How valuable is a book owned by Charles Darwin?

Of course NFT is a bubble just like about every other thing humans create, but humans will always attach value and meaning to dead things even digital ones.

And so NFTs can be used for many things including allowing people to buy something overhyped that will depreciate in value.

That's all good, the more of this the better.