Earlier quoted context omitted.
Not even to mention the willfully broken font rendering on all peripherals that are not "retina enough" since a few versions ago. Using my work macbook with my trusty 16:10 monitors with 1920x1200 resolution in the home office is a literal eye sore since it's impossible to get a clear font image. The company had to send over a retina-enough screen... The worst font rendering Linux ever had is still better what macOS…
If you're having color banding, you may need to force RGB on your external monitor [1]. I had to do this a few years ago, it massively improved the picture. That said, I was in disbelief that this was a problem that both was common enough to be all over the Internet, and so involved to fix. Amazes me that OSX doesn't simply have an advanced setting for RGB/YPrPb, and instead requires that you boot into Recovery Mode…
Anyway, low-dpi screens on macOS are so blurry because it doesn't do font hinting.