It can still stupid be if a different obvious one could have sold more or made more profit.
For example, almost everyone thought the butterfly keys were a terrible idea. They sold a ton of devices with that, but then they switched back anyway.
It sold well because the competition is still worse. It doesn't mean you should intentionally make it worse just because you can get away with it (there's an argument that making it worse to lower cost thus earning more profit, but I doubt the added complexity of USB-C made the new design any cheaper).
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