Maybe he is not the best of the best managers.

But still, it is not easy to win the Serie A title despite having a decent squad. We've seen so many examples in history that some teams had big problems during a season with a great squad. Inter succeeded in this and ended Juventus dominance over the years.
We also have to take into account the fact that Juventus has prepared this season very badly, to the point that they are barely able to qualify for UCL for the next season.
I'm not taking the credit from Inter! Now they went up to seize the opportunity they had. And thank goodness!

Inter absolutely made use of this chance very well, yeah. If Juventus were so much better than this, we could have seen a great competition between them and Inter for sure. But it was not the case.

Inter won a really well-deserved title, congrats to them again.
Now it will be interesting to look at Inter in the new season, which has lost the head coach who led the team to the championship, without some leading players who will have to be sold to stabilize the financial situation, because the management wants to get 100-120 million euros from this and how the team will play in the Champions League. Therefore, if the confrontation between Agnelli and Juventus with the football authorities does not lead to the suspension of Juventus from football tournaments, then it is thought that Juventus, led by Allegri, will again return to the Italian football top. However, Inter are still well done and have earned their title.
It is already said that Hakimi is preparing to move to PSG for a price around €60m. And they won't sell only him of course. I hope that they don't sell any of Lukaku-Martinez duo. They were really incredible last season. And it would be too hard to fill their place I believe.