Asked this question in a game thread a few weeks back and it was dismissed just as early season fit and function concerns were dismissed.
This is nothing short of a bizarre season for Embiid and especially so given his proclamations regarding physical preparedness and DPOY aspirations etc.
He's made it easy to see and if you're not seeing it then I think you need to pay closer attention. A lot is "off" with him this season.
I've been wondering what's up apparently there's been talk: