All platforms have the right to set limits on the conduct of their customers
This goes for virtually all businesses and not just online platforms
Even this site occassionally enforces it's own code of conduct
Yes, but then situations arise like before the election where they banned the NY Post and The Admin's press secretary over a story the presumed to be misinformation, but was actually true.
They can therefore manipulate content based on a loosely defined set of criteria that can be morphed to fit their agenda.
I think there's merit into considering them publishers instead of platform for this, and increasing their liability potential.