My general optimistic opinion on the proportion of 'reasonably sentient' people in society has drastically diminished over the past few years.
"Incredible" was an odd word choice. But after he said "I'm not going to say it" he should have just stopped. Everything after that sounds like he's fantasizing.
As with everything else, trump has to exaggerate or overstate even his few successes... trump lies, about everything, all the time...