The way I see it, the NFT part is actually just for convenience to distribute AI generated images.
It could have been a web app, but with NFTs and Farcaster miniapps, you market to people who are willing and able to spend using their wallet instead of asking “normies” for credit card information for a 2 dollar custom image (that you could also prompt out of a free Gemini session).
With Farcaster, you also already have the profile picture of the user, one less hurdle again.
I think there's simply a huge overlap between the Crypto Bros, the NFT Bros, and now the AI Bros. The same sorts of people are pumping each one. I knew a guy who was into LeadGen and Drop Shipping in the 2000s, then got into online poker, then of course, got into Crypto, then inevitably NFTs. I haven't kept up with him, but I'm almost 100% sure he's pumping some AI related scheme now. These guys get into this pipeline and at each stage they are convinced that they're going to get rich off it.