Right. The claim "The policy switch doesn’t stop hackers, trespassers, or rogue agents. It only stops lawful investigations with lawful warrants." is invalid be

Right. The claim "The policy switch doesn’t stop hackers, trespassers, or rogue agents. It only stops lawful investigations with lawful warrants." is invalid because "hackers, trespassers, or rogue agents" might either get warrants or plausibly claim to have warrants. Indeed, the chief problem Apple is trying to address is that everybody suspects the NSA has been engaging in massive secret fishing expeditions. Warrants are too easy to obtain. Law officers might easily BE the bad guy or WORKING FOR a bad guy, in which case denying them access provides a social good. In the current context (the era of "parallel construction" and gag orders), the fact that a judge rubber-stamped a warrant does not provide much evidence that social good is met by serving that warrant. If cops have to work a little harder to get their job done, on balance that's probably a good thing.