Doesn’t seem like it. When viewing a low volume community on kbin.social, I see zero posts and zero comments. View it from the original instance (lemmy.ml) and there are four posts in the past week, with three of them having comments. kbin.social became aware of the community two days ago according to the infobar. All of the posts were made prior to that date.

Edit: I’ve also been subscribed to it for two days from kbin.social.