When you shout in a town square, does everything else you've ever shouted, everything you've ever voiced your support for, everything you follow closely echo and remain in that square?
Again, this is a feature. But one people really have to understand before they engage here.
Votes are entirely public, Lemmy just made a UI choice not to show them. They show up if someone views it from kbin and ultimately something that could be mined from a self hosted admin.
I think this information may make some of those who profess "everything is saved on the internet and why care" change their tune.
Saves I am not sure about yet. Think that may be locals only.
Edit: community subscriptions are another. I believe the admin that hosts the community has access to the sub, but this may also be available to anyone self hosting. Haven't confirmed anything regarding subs yet, maybe that is locals only too.