Historically the term platform has meant just that, they have a legal requirement to allow all content. Think something like a phone network.
There are rules about what constitutes spam on a phone network - laws limiting robocalls in some situations for example - but it isn't the phone company making those rules.
There are rules about what constitutes spam on a phone network - laws limiting robocalls in some situations for example - but it isn't the phone company making those rules.