> Currently the company follows approach that feels a bit insincere or on times even totalitarian to me - managers cannot disagree with each other in front of other employees, a manager cannot criticize management actions/decisions.
The reason you can't find research about how to handle this problem is because no one would advise you to try to handle it. You should leave this toxic company.
The reason you can't find research about how to handle this problem is because no one would advise you to try to handle it. You should leave this toxic company.