How would we change our approach if we understood it?
This is the question you've implicitly asked in your other thread, about even being able to have a conversation with a conservative today.
I don't have a simple answer.
In my experience, you need to understand them and that starts with listening.
You (collectively) are going to have to marshall your understanding of and the facts of every single topic under the sun, and know how to deploy them to win one individual point after another. Probably quite literally ad nauseam. They've been brainwashed for.. hmm... 30 years? That's a lot of undoing to be done.
I've done this, on individual points. It was an effort, with someone deeply wired to deny and deflect and appeal to endless whatabouttery, who definitely has gone down the MAGA rabbit hole. The point I won was on the Strategic Petroleum Reserve and why Biden was right to use to use it and how it benefitted Americans.
It might well be worth learning how to meme, because I think there's some truth in the right's claim that the left can't meme. Memes are the semaphore of the right. They might be semi-illiterate but they can read a meme perfectly astutely.
I think that liberals/the left need to collectively learn how to engage with people in a non-judgemental way. Yes, you're going to be having conversations with toxic minds, but you have to do that. Put your big-boy rubber gloves on and get in there. Every time a highminded lefty says "I simply refuse to speak to a racist" they are conceding the political highground to the racist. I think it's bonkers, but there you (all) are, judging people left right and center. I mean, I
get virtue signalling - we all like a little oxytocin now and then
but if you want to change the world (back) you have to learn to love people you currently hate.
IMO.
This is (as noted) a whole nuther topic.
[Edit] - another issue, to which I have no immediate solution, is to understand that a lot of MAGA supporters live in communities of MAGA supporters. Where do they go for social needs and community if/when you talk them out of being a MAGA supporter? There are broad parallels with organised religion here!! (and that's where I got this thought from...). So this is something you need an answer to.
Interesting point of reference - how did the QAnon bandwagon evapourate? How did people leave it?