Believe what you want, but I do know he says VPN's pose absolutely no obstacle in his investigations, he says the ISP logs have everything he needs, and the ONLY ones that are difficult are one's which originate from ISP's outside of the country, and that those are the ones he hands off to his buddies at the FBI. He says the people they have blow the skills of his department away.
Under a functioning VPN (including an automatic Kill-Switch) there can be no snooping. The ISP would only see packets going back and forth from the suspect's computer and the VPN server. The contents of those packets would appear as meaningless gibberish.
Most, if not all, VPN providers use encryption that is impossible to break by any local law enforcement. I seriously doubt the NSA can crack AES-256.
We will have to agree to disagree.