I don't think any of that matters at all to people who enjoy the games or virtual worlds. I understand your point, I just disagree that it will matter in any way.

>you can buy a digital artwork at a Christie's auction and display it in Decentraland and have it be verifiably authentic

I can't imagine anyone would give a shit about someone's virtual art being "authentic" for whatever meaning of authentic NFTs pretend to claim. This is basically receipt porn at this point. Truly we're talking about bragging about wealth, one of the shittiest traits a person can have.