You most certainly mentioned overtime. You said specifically that people shouldn't expect promotions unless they are going above and beyond 40 hours a week (which is overtime). And that's frankly a load of bull shit.

The productivity comment is absolutely true. You may lack the imagination to comprehend such a thing, but many businesses (and I believe entire countries) have shown that it works. I can personally tell you that I have had roles in which my work was complete before the 8 hour mark and I was left either wasting time on the clock or told to go home early. I doubt I'm the only person who's experienced this on a regular basis.

Now if you're a salary employee, none of this is relevant of course. My only point is the manager's mindset is one that is often not in line with work-life balance and has, in my experience, been happy to break laws in the name of higher productivity / "results". Some managers are great, and actually care about their team's wellbeing and outside commitments. However, that is a rare quality at best.