You find out by reading it and seeing if it's fucked up or accurate.

But the wokescolds want to stop people reading things by those they don't like and don't want get exposed to contrary opinions themselves so they can't do that.

They have to demand people list off their identities, credentials and, most importantly, victimhood.

Look at American Dirt, liked by pretty much everyone who bothered to read it but viciously hated by woke people who'd only read about it on social media because the author was the wrong type of person.