"only for thing people would legitimately like to have."
Whilst that may be true for the most part, much of the art dealt nowadays is never displayed, just stored somewhere incredibly tax efficient until it's value has gone up enough to warrant selling.
In that respect I suspect it is much the same as bored apes. The price can go up while there are people with funds to put into things they don't care about. When the time comes that they have less money than the cost of things important to them, the 'value' can swiftly evaporate.
The entire NFT thing would work if it were restricted to things people want, even if that only amounts to bragging rights.
Somewhere along the way people lost track of the fact that being able to trade something doesn't denote value in itself