You absolutely bring up good points yes, but at the same time, I don't think its a check, so much as a mild mitigation. Even on the lemmy verse there are still mega subs that take on the most activity and gain similar types of "too big to fail" critical user bases.

The core problem, is that when a group gains disproportionate control over what users can see, they can push their views/twist arms, and that ultimately isn't solved here.