Twitter and Facebook and Youtube were argued as the alternatives to the previous generation of gatekeepers.

Ungated media such as Usenet of various moderation-free zones online also fail.

There's an inherent cconflict between complete freedom of access -- a sort of full-body local contact or intimacy, and and of distance, time, and/or scale.

Distribution and scale presume a gating function somewhere. The only remaining question is what the channel biases for.