They were also auto-banned during their sign up here at ETARC/AtlasCSD, then re-instated by the System a few days later; it references both of these incidents in it’s sec logs.
The running theory is the Puppet Master knew what they were doing to cause these bans, they were intentional, to feed into its own narrative when Travellers would finally stumble across Project Skyscraper after a few nudges here and there in that direction.
As you can see by the amount of users getting auto-silenced by the Discourse bot, it’s not that hard to do.
You can see this post here https://forums.atlas-65.com/t/connection-detected-access-denied/9085