"Who is this schlub and why do I care if he quits his job?"
Because he was formerly with one of the preeminent and trusted names in computer protection software and if his assertions about our ignoring computer security are valid we may very well be f$*ked.
Much of our modern infrastructure, including military, relies on the worlds networks and the devices that reside on them and the avenues for attack are varied and many.
I'm sure he can be replaced with no effect to "cyber security". An $80 mil budget is hardly ignoring computer security. There is more to this story that has nothing to do with security.
How professional of him to quit with 1 days notice.