Without time, we'd be stuck in the 19th century. Nothing that required time precision (drugs, electronics, mfg, etc., etc) Is that what we want? We can still enjoy a life with Sun-time. Project based occupations don't really need more precise times except for scheduled meetings. So you can work whenever you like. Even better than a farmer who HAD to wake up before the Sun got hot. And had to milk the cows and had to harvest grain before the frost. DAYS mattered. You had small windows of time to plant or to harvest.
We have it easy today. I can't understand the grumbling.
I don't know if the author is willfully ignorant, or is hoping everyone else is for the sake of ideology.
Anyone can cut themselves off from time. Go live in the Amazon, go become a forager, whatever. Oh, you'll learn you need to know what time is regardless.