I flew with a significant number of the 70's-80's vintage CN's during the mid 90's and onwards.
The "old school" had it's way of doing business. But the profession would have been significantly advanced by more progressive Commanders. They would never ask "next time what would you do differently??" etc.
Shame on the Captain who does not take on the opportunity to educate and develop his crew. Sectors should be given away and briefed/debriefed for the benefit of the crew. This should be done in a way so that your F/O (etc) should be ready for Command when it comes.
I got minimal support/development during my early years in this Company. But it is down to the rest of us here now to put things right.