I used to work in a plastics lab and from what I've read above, I don't think there wouldn't be any discernible variance in the energy the "Vinyl" gives back to the needle. As long as it's durable and firm enough (ayo!). There are loads of other stuff in the chain of sound, like the needle, the amp, the cable, the speakers, the listener's position and ear drums that would be more influential on it sounding "Good" or "Bad".
I'm all for keeping shit out of the air I breathe and the water I neck so props to them for being one ant in a well-meaning colony.
Marketing gimmick? I await the dawn of nft music ... (googles to see if this ain't already a thing... shit, it is a thing already)...
https://pyramind.com/nft-music-how-to-get-paid-creating-your-own-non-fungible-tokens/
I need to step up my magic bean game...