Definitely smells like ai. I don't think a human would spend so much time on the graphics and effects and not have streamlined the gameplay a bit.

The opposite would be correct. AI generated is the norm, and it would be impressive to spend xxx hours creating this when AI can do it in 4 hours

Assets are very easily duplicated because of the editor that ships with the game. Not as impressive as it would be if it were other games with more tightly-locked assets.