People can choose what they want, but i want server admins to be aware of the possible negative impacts their own dominance might have.

Any one server should not have an interest in having many users, because there is no commercial benefit. If a server doesnt do anything against becoming a monopoly it either wants to have the ultimate power to moderate peoples speech or has hidden profit motives like selling their userbase to some company or running advertisements.

Large servers are the beginning of the end in a decentralized system that depends on having as much federation as possible.

If you defederate lemmy.world there is a huge drop in posts, but if you dont then the problem gets worse. If lemmy.world admins were to stop federating, half the lemmyverse collapses and even more people will move to an account on lemmy.world to keep their content source.

We dont even need meta/threads for these problems, any regular lemmy server can be the one that splits the userbase.