I think most of us agree that it was time to part ways with Allegri. The end of last season was one big mess. Lack of motivation, too many injuries, Max getting antagonized and quibbling with the press constantly, etc etc.
However, many of us also thought Sarri was a mistake, a one-trick pony, and having nowhere near the class usually associated with our managers. And right now, we look more like the shit end of the season than the the first 2/3 of last season when we miles ahead of where we are right now.