I was told in my last job that apparently the tech department was really sensitive because they didn't like being screamed at, for the rest of the company it was totally normal. I honestly don't get it, how can anyone do reasonable work in an environment where getting screamed at because the boss had a bad day is normal.

It obviously does. But, it will not harm your management career at all, so we get managers that verbally abuse people.

You would think. But while it’s not common, in my experience, it does happen. I recall one job I had in a startup where the CTO was a screamer; he’d literally storm around the programming pit shouting at everyone when he was in a mood.