The good enough level isn't ever arriving. We're in the first or second inning for LLMs. They will rapidly subdivide in complexity, they will not stagnate in the next decade.
Beyond the model, when would you freeze processor performance, such that it was good enough? Because that's exactly what freezing on Talaas is premised around.
The semiconductor technology will also continue to improve. You lose twice. Talaas is one of the dumbest ideas I've seen in semiconductors in decades.