I think the AT protocol is versatile in that users can acces each others data once authenticated without any centralized service (granted the aggregators and some other things may still be centralized).

So the recent push to artists to move there to protect their rights against AI training is not only false but a trap since anyone can point their cannons to train data on Bluesky.

Is there any auth necessary to pull data from a PDS? I know the main relay is a public firehouse so I would be surprised, but maybe the PDS can put relay servers on an allowlist?