No it really is about the test suite, and provably so. As another poster pointed out, speed is a superoptimization problem and the test suite provides the constraints. If the constraints are appropriately set, even a naive genetic algorithm will eventually improve the outcome over time, provided suitable mixing of the proposal scheme. LLMs provide measurably better proposals than naive approaches, so the entire chain is sound. The issue really is an inability to set appropriate constraints on what the user is looking for, and poor quantification of the multiple objectives one should try to balance in practice. What's great is that's a human problem. Diverting that to the models is obviously a disaster.

I agree that there has been a glut of subpar developers for years, and that has lowered the bar significantly. This is mostly because core values shifted. So let's keep our eyes on what really matters rather than acting elitist.