He is playing the word game, what a technical person might call a "backdoor" he will call a "front-door" or something else, so there's technically not a "backdoor" and he technically didn't lie, even if he wants what many of us geeks would indeed call a "backdoor". It's sort of how the NSA redefines the dictionary meaning of common sense words to mean something else, (for example something like: "surveillance" means breaking into someone's home to plant a bug in there, so technically almost no one is under that definition of "surveillance", even if capturing our emails, hacking webcams etc. would be considered surveillance as well, but since no one broke in to plant a physical bug, that's not "surveillance" - it's just a words game).
I thought it was interesting that he talked about breaking into other people's devices while specifying how they would harden their own systems. "We don't want you looking at our stuff, but your stuff is fair game."