I'm not so sure that people want to join the biggest party. I follow a lot of similarly named/themed magazines/communities because I don't want to miss interesting or informative content. The content i like might not get that much engagement (upvotes or boosts). I guess this is similar to what I followed on Reddit.
Right now kbin.social has the categories Subscribed and All (this is what I see on mobile). Maybe we need a Favorites category as well for the mags/comms we like the most.
I like to check out memes but there has been a flood of them. So I don't subscribe to those mags/comms because I know I will find them easily on the All queue regardless.
ETA: I love that there is no algorithm showing me more of what I've already engaged with or more of what it thinks I want. I like being exposed to new stuff that I didn't know I wanted to read about.