It wasn't "perfectly working", there was a lot of text on translucent views either looking horrible or changing antialiasing type when animated on macOS.
I was not aware of that. On the other hand, I am mainly looking at static text with opaque background (including PDFs). At least there, the subpixel hinting would benefit the keen readers' eyes.
If you're reading a ton of PDF's, try comparing Acrobat Reader with Preview -- they use entirely different font rendering. Preview is unhinted undistorted macOS rendering that preserves exact letterform positioning and widths, while Acrobat uses hinting to distort letterforms but align closer to pixels.
If you're really looking for maximum crispness you might prefer Acrobat. It makes subpixel rendering unnecessary for all perfectly vertical and horizontal strokes, since it's trying to avoid antialiasing them in the first place.
Indeed, Acrobat rendering is vastly superior in that respect. Thank you for that mentioning that.
Apart from the Acrobat solution, on macOS 10.11, it is possible to turn off text smoothing in Preview.app's PDF settings (which retains subpixel rendering). This gives, to my eyes the best PDF rendering that macOS had up to now.
