I don't think that is the main divide although it also exists. The bigger divide I've seen is the anti-intellectualism, anti-science, pro-magical thinking movement. I can't tell if it has always existed (which I tend to believe) or if it has grown during my lifetime.
I think it's always been there...
It's perhaps just more "noticeable" because it now pertains to some more politically divisive issues as opposed to one that people don't care about as much.
One glaring example I've mentioned before is in the realm of alternative medicine.
It obviously started getting a lot more attention amid the whole covid/vaccine debate of 2021-2022.
But it was always there.
Look at how many people have (and still do) go to Chiropractors regularly or partake in the usage of "essential oils". It's more than just a small amount of people. And those two things are every bit as "quackery-driven" as some of the alternative "therapies" pitched during covid.
However, people didn't really associate the embracement/rejection of either of those things as a political amulet or badge of honor.
I've never seen a Facebook banner saying "I got my adjustment" or "Proud to be oregano oil-free", followed by a lengthy argument in the comments section.
Likewise, there weren't any efforts to "regulate the misinformation" pertaining to either of those two things. My aunt/cousin are still trying to rope people into their DoTerra pyramid scheme lol.
It seems altogether normal to me for people to want validation of their views. I agree that dishonest actors who knowingly tout bad or even outright wrong information are a giant problem, but those that reject scientific knowledge as mere opinion, those that can't or don't want to understand, are at least as big a problem. The whole "common sense" argument, that true knowledge is instinctive or only revealed by God, is as big a divide.
I don't even know that it's always a case of people trying to tout wrong information (at least not intentionally) as much as it is what I've called "The Amazon Next Day Shipping Culture". People want what they want, and they've become less tolerant to waiting for it. "Everything I want and wish to be true should happen by tomorrow at 5pm"
So it creates a "rushed science" for lack of a better term. And then people expect others to (and get mad if they don't) treat a "soft science", that's only been looked at on a larger scale for maybe a few years, with the same reverence and solidity as other far more established hard sciences that took decades and decades.