EA might systematically generate a scarcity mindset that produces low-integrity actors

(Upvoted.)

Some of the attempts within EA to solve this seem to be to push even more towards just being a professional network. I think that's dangerously wrong, because it doesn't remove the informal networks and their power. It just makes access to them harder, and people more desperate to get in.

Somewhat relevant counterpoint:

For everyone to have the opportunity to be involved in a given group and to participate in its activities the structure must be explicit, not implicit. The rules of decision-making must be open and available to everyone, and this can happen only if they are formalized. This is not to say that formalization of a structure of a group will destroy the informal structure. It usually doesn't. But it does hinder the informal structure from having predominant control and make available some means of attacking it if the people involved are not at least responsible to the needs of the group at large. [...]

... an elite refers to a small group of people who have power over a larger group of which they are part, usually without direct responsibility to that larger group, and often without their knowledge or consent. [...] Elites are nothing more, and nothing less, than groups of friends who also happen to participate in the same political activities. They would probably maintain their friendship whether or not they were involved in political activities; they would probably be involved in political activities whether or not they maintained their friendships. It is the coincidence of these two phenomena which creates elites in any group and makes them so difficult to break.

These friendship groups function as networks of communication outside any regular channels for such communication that may have been set up by a group. If no channels are set up, they function as the only networks of communication. [...] 

Some groups, depending on their size, may have more than one such informal communications network. [...] In a Structured group, two or more such friendship networks usually compete with each other for formal power. This is often the healthiest situation, as the other members are in a position to arbitrate between the two competitors for power and thus to make demands on those to whom they give their temporary allegiance.