You're reminding me of another exquisite part of the speech today, when POTUS called out "Members of Congress who hate America" ... then proceeded to make is utterly clear he was talking about the muzzies, saying: "How was it going for them before they came here?"
As I just described a few minutes ago, I felt this speech was a little self-indulgent, a little incautious ... almost as if he knows something so big is about to happen that the details of this speech will not last long enough to disturb the course of events already in motion.
Absolutely concur! Trump was almost careless. Maybe Care Free is a better term, but, I sure agree with your point. Just, “Wow”.