Leading with an angry voice, always sounding critical and not being seen as a working Captain is the surest way to burn through crew.
I once worked with a Captain that worked short hours, ruffled everyones feathers while onboard and spent more time working on crossword puzzles than doing something constructive.
Leaving it to everyone else is not leadership, its poor management.
When crew moral is down, drama is up and people start looking for a way out. Reputations are made and broken by word of mouth and crew love to tell tall stories when their socializing with other crew.