That instance has always (to my knowledge) had a hard-line extremism stance, and they take proactive measures to prevent anything borderline from being federated to the instance.
Looks like this was the comment that got you banned: https://lemmy.world/comment/11174896
You can see that from the modlog via Dubvee
https://lemmy.dubvee.org/modlog?page=1&userId=1035821