Most of the visionaries have left cryptocurrencies because they realised just how riddled with fraud and grift the ecosystem is so what’s left is people attracted by the money. I expect NFTs will have the same trajectory.
On the other hand, if you voluntarily would like to value an NFT by purchasing it, that's your option as a consumer.
Don't like it, don't buy it. Seems simple enough. Contrast this to the existing structures of copyrights and intellectual property. NFTs may not enforce ownership rights in the same way as other mechanisms, but they do commodify existing voluntary relationships.
A better question might be why the premises of subjective valuation and voluntary association upset so many individuals?
Why must we all agree upon a standard of value? Different consumers have different desires.