Mourinho, on the other hand, seems to diminish players, they become a lot less than they could be, les confident, less accomplished, less daring; Sanchez isn't the force he was as a sulky genius under Wenger; likewise, Pogba is not the player he could be and should be.
So, yes, serves Mourinho right.
Some players - I am thinking of Lampard, Terry, and Drogba - seemed to take well to Mourinho, though to be fair, that was the Mourinho of ten years ago. Fellaini is a Mourinho-type player: Tall, solid, makes few errors, follows instructions and is happy to play dirty.