Was this a knee jerk thread after a bad result or two?
I have no idea of the work behind the scenes of our coaches. However, I can only assume they will be very competent at their work. Let's start with M Phelen who was appointed by football Don Sir Alex as first-team coach and assistant manager. That's some CV. Kieran Mckenna's work was so impressive Jose elevated him to the first-team staff following the departure of his sidekick Rui Faria. I am not sure about Carrick as a coach. I do know he was a great professional and well respected as a footballer. I do remember Ole saying Carrick not being a yes man, and he wouldn't have it any other way.
That's a lot of coaching experience just to decide the choice of playing styles 4-4-2, 5-4-1, 3-4-3, 4-3-3 and in-game management. We also now have Ronaldo who will obviously have an input. There is so much experience now in the team the players should be able to coach themselves and deal with in-game management. They are no longer apprentices.
I'm not saying Ole or his coaches have always made the right decisions, but as fans, it's easy to criticise substitutions after the events. To be fair, Ole has improved the team year on year and last season we finished second and were pretty close to winning some competitions.
Let's judge him after a major portion of the season. Not when we're top of the league and just lost one game due to a sending off and a mistake by a player in injury time. Yes, if there is no improvement after the season or something drastic happens during the course of the season then it's time for a post-mortem. In the meantime get behind the team.