It is a highly ascetic, hierarchical organization of camps and communities, influenced by decades of waging war against heathen, and borrowing heavily from the effective traditions of the zealous Rechabites that already inhabited the wilderness. In Egypt, Rechabite clans that moved to sustain the new Temple, were not so affected by all this militarism. The therapeautae are highly ascetic, in virtually identical ways that the Essenes are. But they are NOT Essenes. Later, out of the less militaristic tradition of the Egyptian Rechabites, we learn that Joseph, Mary and Jesus spend several years in Egypt.
More research is needed.
I will find the texts that make each link feasible and rational. I will not ask you to accept these ideas at this point. But the efforts of some to hopeless confuse the issues between Therapeutae, Essenes and Rechabites needed to be addressed with a theory that keeps the sub-threads sufficiently distinct that we can profitably explore the individual ideas, and see where each one might lead us.