Speaking as a player, the problem with AI, especially AI art, is that they are associated with low effort, and most times they are very low effort. Fun games require a lot of love and effort from the developer. If your game design is actually really good, using cheap (stressing cheap here) AI art is like putting a fancy dish inside a junk food box. People immediately associate it with trash even if the design is good. Programming/amature art is much better because there are a lot of great games made with them, and people associate them with "cool hidden gem made by a random guy", which is the spirit of indie games.