Jose Mourinho is a very strict coach, he is an experienced coach who has trained a number of star players, of course the problem with Rick Karsdorp made him take a firm stance so that nothing bigger would happen to the AS Roma team.
and that's the typical Jose Mourinho, everyone has a different personality and this Jose Mourinho is a unique coach and is considered controversial by some football fans who don't like him.
and regarding the achievements with AS Roma, he has proven it by giving trophies in the first season and if you look at the statistics that Roma continue to grow after being coached by Jose Mourinho and for the Scudetto race I think Roma will compete hard for it even though this season they won't win it but it is not impossible that in the following season Jose Mourinho will give that to AS Roma, he needs a process with the AS Roma team which has a makeshift squad compared to their rival teams in Serie A.
Mourinho is a great coach and yes, he is very harsh on players when they do silly stuff, but that doesn't change the fact that we are talking about someone who hasn't really had a big achievement in a while, whereas he is treating players like he is the superstar manager he used to be as well.
I am not saying that he shouldn't discipline his players, if he wants to then he can, but shouldn't be shocked if players do not react the way they used to react to him. Because even with conference league title, thats not a big enough title to give him any credit back to level where he was, thats the problem they are having at this current moment.
He is a very experienced coach. I think he should understand that he cannot deal with every player in the same way. He will have to understand different players are going to react differently to his tactics and approach. And he should not have the same approach as all the players.
As a very experienced and senior coach, he should know better. But I think once the players understand that he is very passionate about the game and thats why sometimes his emotions get the better of him, the players will also start responding to him better and also eventually start playing better.