I thought "leftists" loving authoritarianism more than they love leftism might be the dominant wedge between liberals and "leftists?" Like if you get banned failing to praise a nominally left state capitalist nation that produces hundreds of billionaires, while your counterpart in the dialog is calling you a "genocidal colonialist cracker" for thinking it is a bad idea to allow Bibi's favored candidate to win.
I don't mean to downplay your involvement, though, I am sure it is significant.