I disagree mostly with what he said about snowflakes. It's not some great mystery or grandiose theory, it's just a slur for people who have a meltdown over everything. SJWs absolutely are like that.
He also lost me when he said there are certain topics we don't need to talk about (slavery, genocide, women's liberation) and therefore absolute free speech on campuses isn't necessary. He already loses the game when he says that, because SJWs get everything done via a kind of creep, he even mentions it himself when he talks about how SJWs try to shut down topics or people with looser and looser interpretations.
Once you say certain subjects are off the table, the authoritarians will do what they can to interpret everything as being related to those blacklisted subjects. This is a problem with academics, they think everybody else is as nuanced as they are but they're not.