Why isn't it practical? In my life, I've encountered many SWEs that have changed careers. I've met them in national parks working as rangers. In real estate, grocery store butchers, and yak ranchers. Yet I've never once encountered a SWE that was once doing something non-technical and decided to switch.

Purely anecdotal, I know. But still, I prefer to think that all those people discovered this practical advice and are far happier for it. I've never met one that regretted their decision.