How much time do you spend following someone else's dream?
Wealth is inconsequential if you spend 80 hours a week at a FAANG and have no time left for yourself, to plan a different life. The famous golden handcuffs.
That's not quite true though, you can get a pretty well paid job in FAANG adjacent that leaves you with enough free time too.
Living in expensive areas has a lot of cons too, a social life for instance, which you don't really have in a rural area. If that's not important to you, great, seems like you have it all figured it out, live on a small income in the middle of nowhere, but not everybody's dream looks like this
That's just cope. With that savings rate he can save for 10 years and spend the next 40 years doing his own thing. As long as you keep your standard of living the same.