Depends on the communities… quite often they consist of one or two users (or bits) reposting old or current Reddit posts.
And certainly for more niche topics the communities tend to be dead.
Quite often there is little commenting or conversation.
The communities with the most conversation seem to be about Lemmy and the Fediverse…
But yes there are a couple of decent communities in my Home feed, but the whole needs to grow to get it to a tipping point where it provides an active and diverse (in topics and conversation) community.