Prepare to engage full tinfoil mode.
I believe it's purely show, on both sides and both sides know it's all theatre. The FBI can crack that phone and knows that phone has nothing of value on it, they were just two crazies who did something in the name of something. Apple is already in bed with every government agency, but is allowed to put up this show for their PR.
But it's not just PR for Apple, it's also PR for the gov't, to pretend like they're not already all powerful, when in fact they already fucking are.