The headline's a little misleading IMO - this article isn't about making Linux render text like macOS does (hinting and anti-aliasing methods etc), it's just about replacing the default fonts
Edit: Headline's been changed, it was "Get macOS like font rendering on Linux"
It was only a few years ago that, if you didn't want everything to look like crap, you needed to install Infinality-patched libs and explicitly configure font hinting. How far we've come.
it was also astonishingly hard to do. turns out just because you can tell things don't look quite as nice doesn't mean you know how to tweak the infinality settings to achieve a better look - or at least i didn't. i finally gave up and went back to the default fonts. (ubuntu looked much nicer at the time, but even the package that claimed to reproduce ubuntu fonts on arch didn't quite work)
Edit: Headline's been changed, it was "Get macOS like font rendering on Linux"