The way I look at it is that I haven't heard anything about NFTs in a while. The bubble will burst soon enough when investors realize that it's not possible to get much better without a significant jump forward in computing technology.
We're running out of atomic room to make thing smaller just a little more slowly than we're running out of ways to even make smaller things, and for a computer to think like, as well as as quickly or faster than a person we need processing power to continue to increase exponentially per unit of space. Silicon won't get us there.