I paid with my 500 posts and a month of volunteer work, promoting his forum all over the web.
I experienced defamation (as a "shill") and verbal abuse. As Rayn Gryphon would say, I was "harassed, assaulted, bullied, beaten, harmed, injured, mentally abused, gang-stalked".
After months I still haven't recovered, and the same applies to hundreds of his victims.
But the average flat earther is not much better than Eric Dubay. The problem is that he is not the average flat earther, but a prominent one, and one would not expect this sick behavior from him.
The other prominent flat earthers are much nicer: jeranism, Matt Boylan, MrThriveAndSurvive, mark sargent, Stars are Souls... are better than average in terms of good manners and maturity, but he's worse than average.