A platform has NO legal liability for unpopular and or inappropriate content.

Steem is the platform. It holds all content.

A publisher has the tools to edit and censor unpopular and or inappropriate content.

Steemit, just like the tribes and other frontends, actually do "censor" inappropriate content. But, Steemit is bad at what it does since STINC is pretty hands off with it.

Some people have definitely uploaded really bad stuff here in the past.