> tbh, I always read this as Intel doing some sales magic here.

Possibly, but Apple choosing a new, thicker chassis the same generation that they introduce their more power efficient replacement is certainly a thing. Even if Intel failed to achieve the TDP they told Apple, Apple also seems to no longer believe the thinness they were doing was viable for that TDP anyway.

Intel's product offering certainly wasn't as compelling towards the end there, but it also looked almost uniquely bad in Apple's chassis vs everyone else's