if you see a community for the first time, it will take a while to load the last 20 posts on that community. after that, every time an update is done on the remote community, it will be pushed to yours.

idk if at least one person need to subscribe to it, or just opening it is sufficient.

add multi community aggregation to aggregate communities of the same topic on different instances.

that’s because i run manjaro on my main machine, all the benefits of arch + simple intsall

deleted by creator

there is an entire instance dedicated to that, use the lammy explorer to find stuff. be aware that your instace could have defederated from that instance.

no idea, you should search issues on github.

Anyway comments are replicated across all instances, so nobody stops someone from running a modified instance that does not abide to the comment deletion request. Same for posts, idk about images.

you should consider everything that get published public forever.

there is comment edit history, even if you edit them the original will still be visible