The only reason I'd piss all over Trump is because he 1). explicitly stated there was no longer a threat after the last summit and 2). has been gushing over his relationship with Kim ever since. I consider this relevant for future negotiations because it does imply that he is incredibly naive. His negotiating style is to lay no ground work and have no negotiators make preparations and just assume that he personally through relationships and force of will can generate a favorable outcome. That is not international negotiations work. I'm not even particularly sure its how land deals in New York work. Compare his prep to say Reagan going to Iceland; there were months of prep between high level officials. I use Reagan as an example only because so many at TN and Faux News make that same comparison. That ignores the fact Reagan never negotiated as half assed as Trump does.
One other point that probably could have been added was that Fat-Kim has a small team of internet watchers that look outside the the DPRK internet firewall and look at international news and what not. Fat-Kim cares dearly about his perception and I reckon he cares enough about it to get some sweet talk out of Trump. But everyone else both in his camp and his opposition still say the obvious about the nature of Kim and DPRK itself. Although when Trump is pressed on that by a journalists, he does openly admit the horrific nature of Kim and DPRK. But the interviewer has to dig for it a little. It is like pulling teeth. Maybe he shouldn't and maybe he is too carelessly giving Fat-Kim some points of legitimacy. But as I have said before, in 2017, he was all "Fire and Fury" which was the run up towards the passing of the UNSC sanctions. Among that rhetoric was a speech he gave in November 2017 in South Korea which has the ring of Reagan idealism.
In the speech he has a part praising South Korea for its development of economy, culture, democracy and of being a US ally. And he strongly contrasted it at 15:10 with a long description of the despicable nature of the DPRK.
Should another rocket go off flying, I would expect a return to "Fire and Fury". But if no rocket goes up, then that might mean the lip service is serviing a function in keeping the rockets from flying.