I feel like asking "What is AI adding that will appeal to people wanting to buy your game" can be said about a majority of games with or without AI. It's possibly also the wrong question, AI isn't necessarily adding anything special but it IS enabling much more powerful tooling for the creation of games.

The prototyping power and getting a general feel for how you'd like your design to be is only going to get stronger, utilizing these tools as a solo dev is going to be (and already is) such a gamechanger.

People like OP are also putting in the extra work that I'd argue is significantly more than just pressing some buttons and getting some results, though I do concede the next era of low effort asset-flip style of games is going to flood the market soon enough.