The point you are missing is that none of the Left's claims or rules require logic or consistency - they are just weapons used to beat up on political opponents.
Echo chamber drivel, like the sentence I quoted above, occur more and more today, with folks on both sides spewing it continuously. It illustrates nothing so much as a profound lack of self-awareness in the one spewing the drivel. As if people on both sides don't engage in the exact same inconsistent application of logic whenever it suits them.
Using the terms "left" and "right" as loosely as used in that sentence, and given that the left and right are both comprised of hundreds of millions of individuals, each with their own varying personal viewpoints across a vast range of topics, employing such broad negative stereotyping exemplifies a distinct lack of any logic or consistency. And it shows a clear desire to just make **** up about hundreds of millions of individuals, that one has never met, in order to beat up on one's political opponents.
The blatant hypocrisy is stunning.