There is a spectrum though between the leader taking all the accountability and team members taking all the accountability. The leader can be accountable for pointing in the right direction and providing sufficient resources while the team members can be accountable for the execution.

Reality is no single person is going to know enough to solely be responsible for everything. A manager of a sizable team is not going to know the details enough to know the right approach for everything.

I’m a big fan of providing context to team members and having a dialog instead of just delegating everything top down. But in this kind of environment accountability can still be made clear.