From the end of article

> Such incidents do not, however, mean that the very idea of free expression is under assault. The sooner we accept that, the sooner we’ll be able to start taking on the actually important questions — about whether improving our society requires real revision to our speech norms, beyond the non-controversial exclusions of neo-Nazis and overt racists from elite intellectual life into new territory by more fully incorporating new ideas about race and gender into public life.

Translation: "free speech" is OK because what I do not approve is not speech. Also, I plan to keep changing the rules on what it's allowed.