Well, if we are going to tax people, which we are, then it is only fair to tax everyone equally. Just because someone is profiting in NFT doesn’t exempt them. Now, are these the right rules to apply, when is the profit realized? That I guess is the real question.
I think the issue is that NFTs will be taxed at the higher 28% maximum capital gains rate rather than 20% like most investments. If you buy stock or land you get the lower rate. If you buy gold, art or NFTs you get the higher collectible rate.