Being funded by Microsoft is one thing, but working for them might lead to some dissonance -- I think tech ppl are already wary of them owning GitHub... and then owning the team building AGI.
It would and should give ppl pause. I suspect Sam is just inside Microsoft for the bluff. He couldn't operate in the way he wants -- "trust me, I have humanity's best interests at heart" -- while so close to them, I don't think