While I think that Ricky as far as in game decisions go is probably one of the worst managers in baseball, the players like him and there doesn‘t appear to be a lot of drama in the clubhouse. Compare this to the shitshow that was 2016 or the later Ozzie years.
The most important skill of a manager/coach is to make sure that players are a unit and are working together.
I played professionally, not baseball, but whatevs, and I had some coaches who were brilliant tacticians, but everyone hated their guts and it resulted into bad play because nobody gave a shit about what they had to say.