Earlier quoted context omitted.
You're comparing apples and oranges. The CEO of a small internet company almost certainly has a hand in everything the company does. The CEO of a large corporation has no idea what the line workers are doing.[1] If a bunch of Yahoo employees had gone off and run as sex-trafficking site off Yahoo's servers, they wouldn't go arrest Marissa Mayer. Not because "lobbying" but because that would be stupid and unreasonable.…
You are talking about 5,000 current employees being fired and many employees who were fired for reporting it. If he didn't know, then he must not know other things about Wells Fargo that are equally important.
Yes, but establishing the former (which is a crime) as opposed to the latter (which is an internal business matter for Wells Fargo) is the tricky part.