[crumpled]

I looked at the PDF, and can confidently say I could typeset that in a word processor, using a stylesheet to sustain it.

That's not what they did, apparently.

The document properties call out https://cairographics.org

[kenferry]

Cairo’s a couple layers down from what you’re talking about. It’s the actual glyph rendering.

[crumpled]

Yeah. It's just a clue indicating they didn't use a word processor.