The word illegal used a lot, but really, how pervasive is people doing illegal stuff at work? Surely not very.

There's plenty of stuff that goes on in large organisations which sits in what I would call "minor illegality" i.e. technically illegal, but the sort of thing people are going to pretend not to notice as long as they can have plausible deniability themselves.

The word “illegal” appears exactly once, paired with “unethical”. That doesn’t seem to be a major takeaway from the article to me.