All loose ends must be tied, cut off or sewn within the fabric of deception.
Leftists will go to amazing lengths to counter any inconvenient facts and truths that threaten their utopian wet dreams in even the slightest way, by responding with made-up "facts" and "truths" that "support" their precious worldview.
I've seen it happen often enough to conclude that it's a widespread pathological mental condition that seemingly goes hand-in-hand with being a committed movement leftist. They believe so strongly (yet mistakenly) that they are 'the good guys', and that they are 'the enlightened ones', and that they are fighting the good fight against the Nazis and Neanderthals (namely, anybody who disputes any of their cherished beliefs). In other words, many of them are pathetic, Walter Mitty-esque true believers, who are in reality (to put it kindly) mostly dangerous idiots.