It's a very wise decisions as 10-20 years from now there could well be nearly a dozen Prince/Princesses of Denmark at hand. Furthermore as Nikolai has shown they could very be using their titles for financial gain and other ventures.
It's sad that Joachim and Alexandra feel that their children's identity is tied up with not who they are (grandchildren of the sovereign) but the titles Prince/Princess of Denmark. They could really learn a lesson or 2 from Princess Anne and her children.
Also Alexandra herself went from Princess to Countess and she hasn't faired badly.
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