What's a day job, I never had one, was always working for myself. If your question includes "would you retire" option in it then no, I wouldn't. Tried that before and very quickly got bored doing nothing and just enjoying myself. I find it hard to live when there's nothing to occupy your brain, so I'd continue running businesses I have.

PS Not related to the guy in the article, he's obviously pretty wealthy after such a career even without extra crypto money: I've seen and heard of a lot of people who got rich fast. Yet I don't personally know a single one who had managed to keep that wealth, most of them just wasted it all.