I have seen a question on HN about Japanese "Black Companies" before, and I believe patio11 said that they were an actual thing. So I'm not surprised a similar culture of overwork exists in South Korea.
(My only direct experience of South Koreans is that they always kick my ass at online games).
[0] A company so abusive of workers that it literally disgusts Japanese salarymen. Common elements include withholding pay, withholding pay for large amounts of mandatory overtime, ordering overtime in quantities sufficient to cause death by exhaustion, physical violence against staff, harassment of staff by management in a fashion far surpassing social norms, etc.
We actually had that being stated as a fact in one of our elementary school books. Kind of concerning when even the writers of such books do not perform some basic research on the topics that they are trying to cover.
At our regular Chinese takeaway the kids only get them if they come in with us; other places just include a handful.
To me the biscuit is really vile.
But I've never had them from a takeaway, and only once or twice in a restaurant. My experience is almost entirely from London and the South-East though.
edit: What really happened was, some very old people died because of hypothermia by fan when the fan was just introduced in South Korean market. At that time, no one knew about hypothermia so people believed it was suffocation. That became the urban myth.
Whoa, I didn't think about that.
There are people that legitimately believe Earth is flat.
For something less crazy, people were wearing surgical masks in photos of the California fires the past few weeks. They are wholly ineffective, a proper respirator with the appropriate filter is needed to make any impact on the air quality.
More oft than not people will readily accept something as fact without questioning it at all. There are countless YouTube videos that prey upon this, like the 'DIY drone phone case' and the videos with people alleging 'make diamonds with peanut butter and coal'.