I'm a member of 125 Meetup groups at the last count.

Most Meetup groups are zombie groups with thousands of members and no events.

The Meetup engagement algorithm drives people to keep joining groups and keep RSVPing to events, but very little to encourage repeat attendance or to prune zombie groups and events from your calendar. As a consequence, most groups have tons of inactive "members," and most events have tons of fake "attendees."

Even though I'm a "member" in over 100 groups, my Meetup calendar is mostly full of corporate Zoom events that are basically ads.