> isn't that every manager's dream?

Depends... are you working on the most important stuff first?

I'd rather have a strict 9-5'er that's always working in priority order than a 12-2am'er that's scattered and not delivering important work.

IMO the most important thing for success in remote work is having a prioritized backlog and defined iteration. It's way too easy to lose hours and days down an unimportant rabbit hole without these things.

I'd say many places don't have enough PM rigor to make remote work sensible.