Consensus is the absence of leadership. – Margaret Thatcher, former British Prime Minister.
Well of course, if every decision can be made by concensus of the group then there is no need for a leader, what you really need is a facilitator. While leaders can at times be facilitators, facilitators are not leaders.
Judges 5:2 Song of Deborah
When leaders lead in Israel,
When the people willingly offer themselves,
Bless the LORD!
In those days there was no king in Israel;
everyone did what was right in his own eyes.