I have tried to explain a few times. Let me try once more, just for the record.
Yes, his lack of movement has, at times, been baffling to me.
I wonder if he has been carrying a persistent medical issue?
I also wonder if his meteorology needs both more work and a specific type of handling?
I also don't think that every player is "the same" in those regards. As I'm sure you don't.
Something does not add up. IF he was simply a fat lazy tosser, then it tells me that we have an atrocious scouting dept who have royally failed to indentify an easily-spotted flaw.
I believe he was seen as a rough diamond who needed work in key areas (fitness too!) and that Poch had identified himself as willing and able to develop him into what he could be. Add Poch's sacking to Ndombele's own relative lack of experience and I think we might be closer to the answer. My explanation. Again, I know no more than you.