Earlier quoted context omitted.
I'm usually sensitive to such issues, but I'm not seeing it in this case. Can you point out where that's most visible? Or screenshot it? Maybe it has to do with font rendering on your system. It looks fine for me on Windows and Firefox. Hhmm although upon a closer look, the kerning in "We" is a bit wide. But the small caps look fine to me. If this is the only thing, I'd hardly label it "atrocious".
Basically every problematic pair with one of the letters being uppercased Tu in Tufte Pl in Please We in Webpages Al in Also Punctuatuion symbols as in Finally, Markdown’s As for small caps, on apple this is really bad “In his later books” List goes on Cursive in “as close as possible” has stroke width not matching the regular font. In regular font uppercased letters have thicker strokes than lowercased. It’s really…
And to make it even more whacky, even that is not consistent. Dave, Markdown, and Github are fine, to name a few. It's like two letters can't share the same space - whatever the word for that is (kerning?).