Honestly, I believe most people overestimate intellectual and conscious rationality. Among themselves and others. The rationalizing is usually there afterwards. To justify current emotions, actions and circumstances.
Self preservation, since one can’t control much anyways. And one needs a somewhat coherent world view.
This kind of talk is effective if you want to push EU towards China. Don’t really understand the tactics here. Trump in a nutshell I guess.
If he’s really interested in Greenland he should try to create more division between Greenland and Denmark. Maybe that’s what we’ll see next.