Not banned here, but will throw my info here to help build a case and determine what happened:
Firmware: 5.1
CFW: SX OS 1.1
Payload Delivery: Via SX Pro Dongle
Auto RCM: Yes
Games: A few personal dumps with original cert, and some BBB dumps (including games that crashed like 1-2 switch and la noir)
Homebrew: Only Wain to make dumps and and Checkpoint 3.3 to backup saves and inject (pokemon quest mainly)
Updates: After running backup in airplane mode (though by accident i ran it connected a few time without running a backup), I would go to OFW, and update there, then airplane mode and back to CFW.
Online Play: not in CFW, but tested this morning after all the banned reports, and was able to play splatoon 2 original in ofw without an issue , and acces e-shop.
Hopefully if we get more info about everything done by the people that got banned we can begin to really find a correlation.