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One issue to watch out for: Sub-4K res monitors look surprisingly bad on newer versions of macOS with Apple Silicon Macs. And no, it's not simply a matter of non-Retina obviously not looking as nice as Retina monitors - something like a 1440p monitor will look much worse on macOS than it would on Windows or Linux. This is partly caused by a lack of subpixel rendering for text on macOS, but it doesn't affect just text…
My 7 year old QHD monitor pair through a M1 Pro MBP still looks fantastic. Then again, I do spend most of my day in apple Terminal, but I'm not really in want of anything more. Some other sibling comments are saying Windows 10/11 looks crappy, and I agree, as I have to occasionally switch between the two, I just don't like working in Windows anymore, mostly because of the poor display.
I used to dislike Windows font rendering, but it's still better than what macOS gives you for "regular" displays. You can fix it somewhat with BetterDisplay but still...