a) Kind of misleading. Gates for example stepped down from the board. He hasn't been CEO in 20 years

b) How many significant name brand companies are there? Let's assume 2000, which is conservative. If a CEO leads a company for 20 years on average,that means 100 CEOs resign every given year.
Just from that, this list is not suspicious.

Doesn't mean there's no sketchy shit going on, but this is not worthy of a headline in of itself.