I trust Trump about as far as I can throw him, and at the end of the day it's really the Pentagon calling the shots here not the POTUS.
But dudes clearly speaking to a public sentiment here.
The DPRK meeting is a perfect embodiment of the "upside" to Trump's foreign policy: noisy, not anything a regular president would do, and ultimately did not change the status quo even slightly.
And of course the downside is getting us closer to war with Iran (twice, I believe) than we've been in decades.