I agree that he likely wouldn’t be interested in learning Norwegian or about Norwegian culture. He seems to be very much the type where everything has to be done his way.
Didn't he claim that he had Norwegian ancestry? Regardless of whether or not that's true, it is a much-employed tactic of people trying to assimilate with other cultures/nations, for example medieval rulers trying to legitimise their claims to thrones by means of ancestral links etc or Franz Joseph claiming he had Hungarian ancestry around the time of the Austro-Hungarian Compromise in 1867.
It wouldn't surprise me if one day he makes a speech or something in Norwegian and thinks it's perfectly pronounced and is the dog's b******s, yet his grasp of Norwegian is worse than Mary's grasp of Danish
But i agree with Harley and Principessa, I don't think he has any intention of learning the language or culture of Norway, which is a shame because it means he will miss out on a lot of interesting stuff!!