We are able to have those expectations because of him. He has changed the standards at Juve, that is how successful we have been with him.
You are still living in the past. Allegri was great in 2016/17, but he hasn't been able to build on that at all. Our squad is significantly better than it was in 2016/17, and yet we are less successful and play much worse football.
Ronaldo - scored 15 goals per season in the Champions League for Real Madrid. It's very conceivable/likely that he will end this season with just 1 goal in this competition.
Bernardeschi - scored 14 goals in his final season at Fiorentina. Hasn't developed since he came here.
Dybala - still can't find a position for him in the team. He's a forward being used as a midfielder.
Bentancur - looked promosing when he got here. Has stagnated and shown no signs of improvements.
Costa - amazing in his first season, has turned to shit this season
Pjanic - has become gradually worse. A mere shadow of the player he was in 2016/17
Sandro - not even a shadow of the player he was two seasons ago
All our players are stagnating, no one is showing any signs of improvement or development. Our squad is much better than it was in 2016/17 and yet the football is somehow worse. That's how you know that our manager has hit his ceiling here.