I look at the original commenters screenshot at 50% browser scaling but it's still blurry. I guess there is an element of image compression there.
On the other hand; from my own experience (I own linux, macos and windows pcs) on the same display Macos text rendering is much more sharper and pleasant to look at.
I mean with fractional scaling where 1 < devicePixelRation < 2 you're doing it wrong and everything will look bad anyway, so I just assumed integer scaling. And 4K @100% is unusable anyway.
But more to the point you can't easily display those screenshots with different fractional scaling without pixel grid misalignment.
> On the other hand; from my own experience (I own linux, macos and windows pcs) on the same display Macos text rendering is much more sharper and pleasant to look at.
On hires displays (devicePixelRatio >= 2) you're probably just comparing default fonts. And on lowres display (devicePixelRatio = 1) OSX is much much worse than Windows's Cleartype, it's not even a contest.
Linux was always able to be as good as Windows on lowres displays, just was held back by patents, so the Freetype defaults used to suck, and you had to configure it yourself for the full effect.
Idk if it's any better nowadays, 4K display are so cheap and ubiquitous that I really don't get why anyone would buy anything else, except I guess gamers. But with all those AI scaling technologies (FSR 2.0 etc.) hopefully 1440p is on the way out.
That depends on the physical display size and viewing distance.
If you need more working space there's always 5K. That's 1440p@2x. You can even DIY one for pretty cheap. I know there's at least one 3:2 4K display on the market as well, though I wish there was a 24" version.
That's a distinction that doesn't have to exist. If you don't insist on maximizing all windows, a single large monitor gives you more flexibility that multiple monitors with the same total screen area. E.g. for many applications 1080p is too wide to be effectively be used by a single window but too narrow to have two windows side by side. Dividing a 4K or screen by 3 is much better and also allows you to freely choose the window sizes. Some basic tiling support in your WM (either automatic or via shortcuts) is recommended ofc.
I use a 38" 3840x1600 monitor (= about 110 DPI) at 100% scaling and it works just fine for me at normal sitting distance. That's the same horizontal resolution as 4K and I don't think the missing 560 pixel rows would make much difference to how I would use it.
Apple's "retina 4K" LG Ultrafine 4K Display is actually 4096x2304 at this size, which is much higher density at 218.58 PPI.