Seems like a misguided fight.

Slop is slop because it's slop. Sounds tautological, but AI is orthogonal to the problem. Before AI, there were and are Unity/Unreal "asset store piles" which grab a bunch of (mostly free) assets from the engine's store and slap them into a game. Nothing looks coherent or cohesive. AI has made that a lot more easy and customizable, of course, but the end result is the same: a bunch of disparate elements coming together incohesively, making for a poor player experience.

In the end it's about taste. People with poor taste will make bad games, whether they use AI or not. AI has certainly accelerated the rate at which bad games can be made, however.

Personally I'd rather play an indie game made by one person who uses GenAI to help build out their coherent, unique, and personal vision, rather than an entirely handmade yet another soulless Roguelite Deckbuilder, 2d pixel art platformer, or extraction shooter.