can’t think of that many EA groups with >50 regulars
Agree that most EA groups are small, but those lead by full-time organizers such as London or (to a lesser extent) Berlin can reach those dimensions, see e.g. the EA London group directory. Berlin has 200-300 members who have been to an event at least once, an active Slack workspace and multiple meetup groups and projects running in parallel (mostly private, only some are public).
Agree that most EA groups are small, but those lead by full-time organizers such as London or (to a lesser extent) Berlin can reach those dimensions, see e.g. the EA London group directory. Berlin has 200-300 members who have been to an event at least once, an active Slack workspace and multiple meetup groups and projects running in parallel (mostly private, only some are public).