Allegri plays a rather attractive style. But its not his goal to play attractive. he plays like that because its effective
And he'll let his team sit deep and defend, if he thinks thats more effective.
Offcourse it is. When you see your B team stomp teams, it can get players overconfident.
What we see now is mostly a B-team losing. Wich is a wake up call for most players that they'll have to work for good results.