Yeah, I don't remember why So Many Years Ago I felt it was important to
use the Droid fonts; I adapted this choice into the Noto fonts when
modernizing the other day, but, tbh, the default system fonts are
probably just a better fit for like. everything we do, and then *not*
downloading MB of font files.
I also feel like a lot of the contexts where we used serif fonts were
like, frankly incidental, based on where we chose `<p>` for semantic
reasons? I don't think any of them actually are made much better by
serifs, I'm okay with just simplifying and dropping that, instead of
looking for a better serif font stack to replace it.
