That’s the way it is with every platform, you only have a comparatively small proportion of people who do a huge share of the posting.
Reddit has the advantage of being absolutely massive that the power posters is also still a huge number. I’d imagine even the biggest of entire Lemmy instances is smaller than some of the major subreddits, which personally I’m fine with. This emmy instance isn’t some major corporation beholden to growing value for shareholders at all costs, but on the other end it still doesn’t mean the admins can do everything without monetary or labor support from us.