I agree they make mistakes in judgement, that's the whole point of plan mode. That judgement comes to the surface before lots of tokens are wasted without sight of the overall solution.

It's all very simple. "Use x library, data model should be xyz, do m, not n."

They're obviously not at the point of replacing an experienced programmer as far as knowing the start-to-finish way of accomplishing every detail, that's what the human is for.