Here's the thing about leading an advanced and civilized nation: you have to have a bit of tact and at least a smidge of self restraint. You can't blurt out anything and everything that comes to mind and credit it to honesty and an unwillingness to be "PC". You are the face and voice of an entire nation, you need to act like it.
9 times out of 10 when I hear someone say they are tired of having to be PC, it's usually because they can't figure out why they are getting flak for being a loudmouthed ignorant asshole.
Trump won't get anywhere near a nomination for POTUS. I know that, I'm not worried about that. What worries me are the nutters that he's prying out of the woodwork that feel every fear mongering, knee-jerk reaction to current events is totally justifiable. He's stuck his paddle into the bottom of the barrel of our society and whipping up all the useless junk that has settled at the bottom. Those people are going to influence the nomination and election, regardless of where Trump ends up.
The trouble with quoting Trump is that he speaks ambiguously about most everything. In regards to the Yahoo interview, the reporter was definitely asking a loaded question, but the reply was not unlike what he had given to other reporters. In essence, he alludes to doing more than surveillance and registration, which he does quite a bit, but never mentions anything specific. You can also sort out where his head is at by what he doesn't say, which is that such things are unconstitutional and wholly un-American. The one shining moment the GOP has had this election cycle was to almost universally denounce the things he's been suggesting.