We have more about which to be concerned than an interview given to a publication of questionable judgment.
Why should our military have confidence in their "leaders"?
Our best and bravest should not have to operate against jihadist barbarians under suicidally-restrictive Rules of Engagement. Those animals know that they can attack us from behind their women and children or from inside a mosque and we won't fire back. Did Imperial Japan or Nazi Germany receive such "consideration"? If they had, we'd be speaking Japanese or German today.
As far as strategy, how in the world can you expect to win the hearts and minds of those who believe that their god commands them to "fight until all religion is for Allah" (Qur'an 8:38-39)? Who believe that if they kill or are killed "fighting in Allah's' cause," they get to go to Paradise with dozens of "perpetual virgins" (and "boys like pearls") waiting for them to do them as they wish (Qur'an 9:111)?
Finally, having as Commander-in-Chief an (allegedly) former Muslim who lies to the world about what Islam is -- an Islam he studied as a child and, as the "smartest president ever," must have learned well -- must inspire in anyone who's paying attention something diametric to "confidence."