Kerning is horrible.
Small caps have different stroke widths.
Tufte’s style is ok, just the open-source Bembo bad-clone font is very-very bad.
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".
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 on OCD level triggering event to read that text.
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?).