Probably stress. Running a business + a nonprofit + YouTube is already a lot. And on top of that I think he’s recently been diagnosed with being in the spectrum, which is stressful on it’s own way as well. I don’t think he’ll stop though. Dude’s been burning himself like that for over a decade, it’s probably the only way he knows how to live.
Off topic, but good taste with bookworm! Praise be to the gods!
If you wanna selfhost your own solution, I can recommend Audiobookshelf. It scraps metadata from Apple, Amazon, Google etc, tracks on a per-user basis at what point in the book you are, can be used in a browser and has an android app. It’s easy to set up with Docker too. You can even add PDFs and epubs to the books.
Been using it for a few months and it has been great.
As for sourcing of audiobooks, aside from torrents there are also audiobb.com & audiobooksbee.com . They use RapidGator as host for a ddl.
I choose you, Pikachu!