I probably could have worded that a bit more clearly. I was trying to make the argument that there is an anti-truth faction and that this faction is currently in a much stronger alliance with the right. I'm under no illusions that it's exclusive to the right, though, and was thinking of adding a section on anti-vax to clarify this.

In any case, I wanted to stay away from reflexive both-siderism as I've most often seen it used as a bad faith argument.

If you believe that the political right and political left in America are equally anti-truth—or even within a few orders of magnitude—then you are the one who is willfully blind.

For 2 decades now, the right wing has been selling lies to build anger and get votes. It's well-documented and easily provable. The left wing (such as it is) has politicians who do what politicians do—which is to say, some of them are incapable of telling the truth to save their lives, while others are genuinely people of integrity trying to make things better—but they have absolutely not had anything like the kind of concerted effort to erase truth from existence in service of their own short-sighted ends.

And the "even-handed" approach you are attempting to perpetuate is—again, demonstrably—a huge contributor to letting the Republicans get away with their many lies.