[1] Not your personal favorite, of course. That one's the pony in there somewhere. https://quoteinvestigator.com/2013/12/13/pony-somewhere/
An NFT marketplace is a similar to gambling or derivatives. The value is potential income for people.
Another definition of "value" is something which increased the economic output, a positive-sum game. Thus gambling (which is zero-sum) does not create value.
Derivatives do create value in the second sense, in that they can be used to protect against risk, thus creating value (or allowing the creation of value). Yes, they can also be used for the equivalent of gambling, but they have additional uses.
Derivatives have real utility.
Other than organizing the information of the internet (lately it is debatable as to how well they have been doing this lately) via google, what value addition would you say facebook or google is providing?
Same thing with Uber, now that VCs are no longer subsidizing Car rides for the entire world, it's just a more expensive cab.
What are the tech ventures that have been adding value addition to society. Based on the experience i've had with family members becomes complete Q psychos i'd say net negative on facebook's part and they dont even build anything.