I think it's relatively redundant in the fediverse which wins because all federeated instances reep the benefits of eachother (except I think maybe tildes)
It's because Lemmy's the most Reddit-like out of the alternatives, and anyone can make an account. It's gonna be confusing for a while (especially the whole concept of the fediverse) but this might be our best shot at preventing the overcentralization that all these dotcom moguls are trying to peddle.