[SassyBird]

1. Justified text without hyphenation is a quick recipe for very odd-looking uneven spacing, like in your example.

2. The inset used by the headings is jarringly big.

3. The text is too wide for comfortable reading.

4. The fonts used in the body and in the figures don’t match.

Other than that, it’s probably the best-formatted Word document I’ve seen.

I wouldn’t want to use Word, because in my experience even outside of maths its UI is working against me. In particular it’s hard to recreate the same document in two different major versions of Word. The spacing, the sizes are always off. Moreover, I don’t like how formatting is very sticky based on where you position your text cursor. I constantly need to disable styling copied from some text nearby.