I think these are made in preparation for high-DPI screens. The serifs are short enough that I couldn't see them all on my regular screen (particularly the rig

I think these are made in preparation for high-DPI screens. The serifs are short enough that I couldn't see them all on my regular screen (particularly the right-hand serif on the lowercase 'w'). But on my phone I would be able to see it perfectly well. On a high-DPI screen, the text isn't blurry or anything. They didn't focus on the rendering at all it seems, but made their screenshots in high resolution.