Some of these things are based on old Bagehot principles of Royalty.
Things like preserving the "mystique" of old times (Queen) and the next generations being raised more in the public eye.
But one is Royal from the cradle to the grave.
Charles who was a experiment from birth, the first not schooled in Palace, the first attending Uni etc..had different problems, than the next generations which had more freedom. William started constitutional training at 16, Andrew for example at 10.
Harry however was always seen as someone to be out in the public eye, but not like the nonsense some outlets claim as Williams wingman.
The wingman thing is just a rip off of Charles and Edward.
Its false because of the DoE title, which will go to Edward, but could never go to Harry.