I noticed that too on the screenshots page. And it's weird cause it looks right under the "features you'd love" section on the main page. It looks like most of those images (the traffic light buttons, global menus, folder icons) are faked to look like macOS but then the screenshots don't actually look like that.
If you find your fonts rendered to thin compared to macOS you may try changing some of the freetype settings, such as:
FREETYPE_PROPERTIES="truetype:interpreter-version=35 autofitter:no-stem-darkening=0 cff:no-stem-darkining=0"windows clear type is using pixel-accurate subpixel smoothing, it works only in one direction with correct subpixel pattern
what people (including me) dislike about windows fonts is aggressive hinting, that is snapping font shape to pixel grid, it made sense in displays around VGA (640x480) but does not make sense on FHD screen
As an aside the PPI of my screen isn't that different from the PPI of my 15" CRT running 1024x768 (both are about 100). Note that there was less than 15" of usable space since CRTs were rated based on the tube size, not the visible size.
Also, the hardware. (It is much harder to make it work reasonably well across so many platforms without an army of full time devs.)
That's a genuine question, I just read yours in a few different ways.
However, I'd argue that relatively small details just fall into the category of overall interface polish. Not just aesthetic people polish, but the category of things that make you put your hands to your face and scream in frustration.
But yes, there are definitely important details in other layers that are worth considering. I think that when people make comparison's though, beetween macOS' level of finesse and something else, that finesse is defined by polish at most levels of interface with that hardware and so on.
1. Antialiasing of fonts, how crisp and clear does it look on my screen? Windows has struggled with this especially after ClearType.
2. Alignment of elements in various applications. The traffic light window controls look way too far into the app's header. Find a happy medium, copy macOS's spacing.
3. Is the contrast in colors strong enough to tell me this was designed by someone who has some design (hopefully color theory background) or was it just an attempt to use many colors?