It really isn't mate, in the past two years under Mourinho Zouma/Kalas/Ake got a combined 8 league starts, in the equivalent period Stones had 38 despite spending almost three months out with injury.Well, he's developed Oscar, Azpilicueta & Hazard into top players. He brought Courtois back from loan & binned Cech in favour of him. Zouma got alot of gametime last season for a 20 year old & started ahead of Cahill in our last game.
Our much heralded youth isn't all that special to play for a club with World Class players apart from 2/3 players. Namely Musonda, Loftus-Cheek & maybe Boga. 1 is already getting decent gametime, lets see how he develops the other two.
This notion Mourinho doesn't play young players is a bit silly & childish. If they're good enough, they play. The ones that need 2/3 seasons are rightfully sent out on loan.
Agree with you that Mourinho has developed Hazard extremely well though.
Btw does Cahill play much on the left at all? Almost always when I see him he is the RCB, even when paired with junior Cbs like Jones/Smalling for England or with Zouma - about the only time I've seen him switch over was when he came on for Terry against WBA last weekend. Just wondering as have never seen Stones play as LCB either in his two years with us/England youth teams so always wondered how Mourinho was planning a Cahill/Stones partnership to work.