Sure you could. You could draw some crap art, plenty of fucking fantastic RPGs have taken this approach in the past and it didn’t hinder them at all. Working with and around your limitations is part of the craft.
I can only speak for myself, but I find projects with visuals that have poor technical quality significantly more impressive than ones with AI art–regardless of how you feel about the financial aspect, in the former case it’s immediately clear that the creator actually gave enough of a shit to try.