The train of thought is
1. The economy is making me nervous.
2. You're right to be nervous.
3. Then what are your short positions, since you're so smart?
I know it was a long essay and I skimmed most of it myself. But the author definitely mentions this and even has a picture from the 1895 book you linked to.
Homeschooling is another way to protect your kids from social media. If they aren't subjected to forced hang outs with kids who are all on social media, it becomes much easier to control their access to it (or rather its access to them).