If you don't want EVERYONE to participate in your community, then you should really make it private.
I just got permanently banned from a community for making a single harmless remark on a single post that was right there in the main feed. It's not a community I'm super active in so it's not like devastating, but it is annoying
If your precious little community is full of so many delicate sensitive people who can't even be reminded that another viewpoint even exists, then you should really protect them by defederating and having everyone join your private website
The mod has literally removed like 75% of the comments and banned everyone lol
I don't know about anyone else, but I don't have time to read every rule for every community that pops up when I'm in view all
admins of other instances can see who voted, and what they voted. You can easily build a self-hosted copy so you're an admin, federate with Lemmy.world, and see who is voting on a post/comment.
Mods cannot see who votes on a post/comment, so this is the only way.