Re: I would guess MS is to blame
it's a fair bet that the hardware design includes things like board layout, heat sinking, and some means of getting that heat out of the CPU [and other components] and into something else [like the surrounding air] that doesn't cause blisters on the user's various body parts.
So yeah, I'd kinda blame THAT. And I bet that was Microsoft's own in house design, too.
Maybe they need to subcontract to Lenovo or Acer or Dell to get it right...