The mod banning these users is the same mod who made the posts they downvoted. This is mod abuse, turning the downvote button into an auto-self-ban button.
The message is “If you disagree with me, you will be banned”
Monitoring and banning users for using lemmy as intended to signal boost your opinion should be grounds to have all mod privileges removed. This behaviour undermines the integrity of the server and the wider fediverse.
Because mods can only mod a single community, right, and no-one makes it almost their entire personality of “being a mod”?
I’ve sometimes found I’ve been banned on the weirdest communities which I’ve ever even visited, because some dipshit Russian got mad at me for calling out their propaganda and then banned me from all the communities they could. Pretty common on Lemmy