At first I thought it could be some sort of smear / PR campaign. But given the time it took to MSM media this doesn't seems to be the case. And yes work culture is quite different, you are expected long hours in TSMC ( It is well known within Taiwan ), but it is not "that" much different to working in Samsung or Intel Foundry. As deepnotderp pointed out in the current top post. You want to catch up to the world's leading edge TSMC foundry? You work hard! You dont want Intel and Samsung to catch up to TSMC, you work harder.
In many cases, I found people often dont appreciate the pathetic small amount of money they paid for something that is at the leading edge of science and engineering.
And it is often when something is wrong, that one tends to feel the need to communicate that. When all is fine there often just is no need to communicate that.
So using Glasdoor without taking this into consideration is at least an interesting editorial decision.
This is why apps prompt you to leave a review (sometimes offering rewards, often encouraging you to leave five stars), because without that prompt, content or happy people wouldn't leave a review.
That doesn't mean it's necessarily true -- folks in any country, in aggregate, tend to talk about themselves as harder working than their neighbors. But I think this general idea/complaint is way more prevalent than a few Glassdoor comments, even if that's where they sourced the article.
I don't know anything about semiconductors or manufacturing in general, but I do know a friend at TSMC had to buy a second apartment to sleep in because he works such long hours and didn't want the additional commute back to Taipei at night. It's also worth mentioning that -- like the SF and NYC set who maintain "work" apartments -- this guy is compensated very, very well.