I'm very against the so-called extreme "regressive left" but all the big criticisms I have of this, so-called, "regressive left", involve the fact that this is a reactionist movement that claims to be left, but is in fact very authoritarian and against liberty. Which is the opposite of left.
Shutting down free speech in the name of free speech, and being intolerant in the name of tolerance, is not being pro-liberty.