I defy you to even state the US's objective in Syria to begin with. How are we to measure success for that particular military intervention? The real story about Aleppo is the foreign policy mess that Clinton bears much responsibility for. In fact, Johnson is an avid opponent of regime change. Did you even catch the fact that, in their rush to discredit Johnson, the New York Times misidentified Aleppo itself?
It's advantageous to Clinton for this stale "Aleppo" gaffe to remain in the news: She feels the threat of a candidate who won't be afraid to call her out on all of her BS with specific statistics and actual plans (e.g. her criminal justice reform proposal based on "investing in trust" rather that ending the unsuccessful "war on drugs").
This stupid gaffe is still in the news, and yet the Clinton email story has somehow slipped under the radar, even as more evidence of wrongdoing is exposed. I'm surprised that you didn't mention the "world leader" gaffe. That's not as juicy, though, because it's relatively easy to find the actual interview with the *actual* question that Johnson was asked: "Name one world leader *that you admire.*" So, the "unable to name a world leader" thing is pretty much moot.
I understand why ill-informed sheep would continue to perpetuate the "Gary is an idiot" meme, but wake up and look at the issues. The mainstream media are Clinton shills with a vested interest in discrediting Johnson as much as possible leading up to the election (and, skirting the real issues that Clinton won't ever resolve).
I do find some comfort in this election, though: The lack of credibility of mainstream media in the US is clearer than ever. And, I dare say, the fact that millenials-- who consume 0% of old media-- support Johnson speaks to the fact that a campaign's saavy use of new media to raise awareness and offer fuller, non-biased information can make a huge difference. No, you won't see that side of this election story in mainstream media. To me, this signals one more step on the path to the death of mainstream media, and the rise of social media as the source for real journalism.