Calling something "the shit" is still unnecessarily using profanity. It's impolite. It's not a surprise it would be flagged as offensive.
It's not impolite, it's just very informal.
I, on the other hand, am a fucking amazing shit OG bitch.
But yeah this stuff is absolutely dangerous, opinions like these are destroying culture. It won't be long until the threads these automatic tools are moderating, WONT BE WORTH HAVING.
'Nuff said.