Go get a new job. You don’t have to tell prospective employers how much time you spent a week doing stuff for your previous company. They will just see that you worked for company X for years Y and that will probably be good enough.

I guess? If I were in his position and worked in technology (he doesn't, see sibling comment), I'd be worried about skill degradation.

I've never been hired because of my resume, though that definitely helps with an interview. There was always a skills test.

I suppose you could grind leetcode or otherwise cram for a skills test, though. You definitely have enough time during the week.

He doesn't work in technology, so he'd just go find another job and go back to working like everyone else.