The quote that plants this firmly in pretending-to-be-serious land: “The average pedophile at this point is probably thinking, I’ve got to get an Apple phone.”
That was my thought, too. That assertion is a re-working of the sentiment that only people who have done something wrong have something to hide, and it's a dangerous one.
Let's be honest, improved encryption is going to restrain the government's ability to enforce the law. Beyond pedophiles, there are definitely going to be cases where innocent people get hurt as a result.
I'm okay with that. The whole idea of our government and society is that the mass of law-abiding and decent people are stronger than the criminal and malicious minority. People are by and large responsible, which is why they can and should govern themselves. Limiting the government's ability to snoop and intrude on citizens is a crucial check on the very real (if long-term) threat of government over-reach.
But let's not kid ourselves that our privacy, and its constraints on the government, is without consequences.
The government currently kills people as part of exercising its policing powers, which most people agree are overly aggressively used.
If this lowers that rate, it's possible that the difference in beatings, shootings, and home invasions will be basically even, because there isn't a large portion of the criminal element which is waiting for better encrypted cellphones to do these things (hint: other things about cellphones make these problematic, and most depend on other evidence anyway when prosecuted), where there is a reason to think that police being restrained in using illegal investigation methods will decrease the rate at which police use other illegal investigation methods.
People that are OK with innocent people getting hurt never seen to realize that this usually guarantees that criminals get away with their crimes by the wrong person being convicted. Is that also something you are OK with?
Maybe he is trying to explain why so many people in his department have recently purchased Apple phones. Latent criminal tendencies are the only possible explanation.