Every instance on the Fediverse has its own set of rules written by the people who run that instance.
If you disagree with them, you can move to another instance with different rules.
This is how the Fediverse differs from centralised social media such as Twitter/Facebook/IG, there is no single group or person with power over everyone.
On Mastodon, you can see your instance rules by clicking on the "About this server" link in the bottom left.
@feditips If you don't like any of the rules anywhere, set your own server up and take responsibility for the security, safety and financial support of the server.
@zleap @feditips "anyone can setup a server" is false information. Less tech inclined users are definitely not able to setup a server and misleading informations like this damage the Fediverse reputation, because it leads to highly frustrated non-users. Been there, done that, got no shirt. Personally I think that "everyone can setup a server" is a highly arrogant attitude.