Is your approach scalable, sustainable, resilient, etc? What happens when you can’t be there? What happens when you’re no longer there? If I were your manager (and I have been a manager of managers), I’d be concerned.
That could be the reason. Maybe I'm trying to manage the wrong people? But cannot confirm, that's my dilemma.
How would evaluate if a person (be it junior or senior) is capable of making right decisions themselves?