How does this

> If this source [0] is true then 65% of audiobooks (in 2022) were non-fiction. Likewise that the audiobook industry has grown by nearly 3x since a2022.

Lead to

> by my math, it's simply that people prefer to listen to self-help books (which matches my own experience).

I'm not sure I see the math there, when most nonfiction is not self-help books (and an increase in the broader genre says nothing about a specific niche)