If Meetup's error rate was public information, your point would be sound. Since ...

danshapiro on Jan 20, 2013 | parent | context | favorite | on: Meetup, you've been bad, bad hosts

If Meetup's error rate was public information, your point would be sound. Since it is not, it is reasonable for the author to look at his experience only. Giving them two chances and experiencing a 100% failure rate seems like reasonable cause to abandon them.