"pretending that only the US has a workforce sexual harassment problem"
I haven't touched on sexual harassment. I'm talking about dating and romance in the workplace, and I can assure you that few workplaces globally have any policies against this, including large and very large companies. Principally the largest workplaces of all: the public sector.
American corporate (and American inspired) anti-dating policies are creepy. Not even the Soviets infringed on their workers like that.
If somebody reads our little flame war here, I'd like to tell them: Your boss or company trying to control who you date is as weird as they trying to control what you eat.
But I do honestly think we have different perspective on the roles of bosses and workers in the workplace. For me, it is alien to refer to any boss as a "superior". They lead the daily work, and that's as far as their authority stretches. Referring to them as "superior" would be fit in a military setting, but nowhere else. Is the worker "inferior" then? Calling them "subordinate" is also very alien to me. Where does that kind of language regarding fellow workmates come from?
I've had bosses and I've been a boss. I'd expect my employees to laugh in my face if I tried to tell them what to do outside of job tasks, just as I would laugh in the face of any boss doing the same to me.
So I'll ignore the rest of all that follows from that ridiculous conclusion because it isn't based in fact, nor is it attributed correctly (it's yours, not mine).
These 'insane policies' are issued by just about every workplace anywhere on the globe with more than a handful of employees because those policies seem to work reasonably well in practice whilst accommodating the reality that people will date other people in the workplace.
As for sexual harassment: that happens and more often than not it is exactly in the situation where superiors push subordinates to do more than their job description strictly requires. Likewise for co-workers if superiors don't run a tight ship.
That none of this happens where you happen to work doesn't mean it doesn't happen. And no, the subject is not 'dating in the workplace', the subject is Amazon that is selling a bay area office complex, but if you want to be specific I did mention the word 'superior' in my comment and you seem to have completely ignored it.