Right authoritarianism is fascism, that’s the definition. But left authoritarianism is a very, very real thing. And many people who claim to be libertarian leftists still want authorities to enforce their ideals. Back when I used to shitpost on Reddit political compass memes a couple years ago we used to call them watermelons - green on the outside but red on the inside. There are anarchist leftists for sure, I’m not saying it’s everybody. Those people are mostly pretty cool to me but authoritarian neolibs can eat a bag of dicks.