Most NFTs are still made on the Ethereum mainnet which has huge gas fees indeed. There are alternative protocols which make it cheaper but it's a pain (and expensive) to move over to those protocols.

There are some projects working on reducing this though, for example zkSync is doing some really interesting work on a layer2 solution that feels like you're staying on the Ethereum mainnet but the fees are highly reduced thanks to the zkRollup algorithm.

I saw my friend mint an NFT for $1.40 the other day just to showcase the work zkSync has been doing, at this cost it'd be super interesting for real world uses beyond just art provenance.