IMO, the fundamental role of a PM is to make the decisions nobody else wants to (and own the consequences of them). If my team is making progress and decisions are being made, I get the fuck out of the way.
I jokingly refer to myself as the "designated scapegoat", basically meaning it's my job to tank the risk for situations where everyone is nominally in agreement about something, but nobody wants to be the person to put their hand up and own the decision because of the risk if it backfires.