I think that he’s trying to rile up wealthy workers and small business owners who view their (better, but more expensive) private insurance as a luxury good and fear it might be made worse or more expensive if a national Healthcare scheme were implemented. I think it’s pretty clear he’s also flailing and making mistakes because of it, but we shouldn’t overlook that Trump does have a handle on what some slice of Americans interests are, and his stament there isn’t totally insane. Shit, it might just be a reflection of his own personal fears, but there’s absolutely a real constituency for it.