PSL is much less authoritarian left than the society we live under today being authoritarian right. The thing is, you've accepted authoritarian right in your heart more because it's what you're used to, so you see it as being better. The change to authoritarian left is a much greater thought experiment, which makes you very uncomfortable.

Also, for all you liberals buying into this man's crap, he's self described as being redpilled and he's also probably an anarcho-capitalist (hanging around in their subreddit). Stop falling for these far right-wingers crap. He's not someone who has genuine concern, he's just another far-right asshole.