I find myself somewhere on this spectrum. I'd appreciate if you could read my comment and pick me apart on this because I hate the division too.
I never thought that coronavirus didn't exist, but I've always thought that it's "just a flu" (not literally, but figuratively, in the sense that Spanish Flu was just the flu, and now we're no longer immunologically naive).
In terms of the anti-vax stuff - well, I'm fully vaccinated, but I'd probably be considered "anti-vax" by a significant number of people because that I do not believe that it reduces transmission sufficiently to eliminate the virus if 100% took it - e.g. I think herd immunity is impossible, so to me it's 100% a personal risk.
Based on this, it makes me viciously angry when people back restrictions, lockdowns, mask mandates, vaccine mandates, etcetera.
I see these people as being scientifically illiterate because they're willing to apply force in order to attempt to solve an unsolvable problem.
And as time passes I start to just stop paying attention and discount them as, well, being human. I just can't, for years at a time, listen to people spout arguments based on (what I consider to be) false premises and continually try to explain why they're wrong.
Either I get angry and lash out, or just meme it. Neither are particularly conducive to bridging a divide.
What is the solution to get out of this mess?
How do I make peace with someone who seems to be maniacally obsessed with something I consider to be a non-issue?
I don't expect here that either of us will convince each other, but yeah, WTF do we do? I fundamentally can't see the solution, like you say it's literally cut society in two, as if we now have completely different utility functions.