There is indoctrination and manipulation going on at all levels. Can't speak about the Netherlands or Denmark, but in Spain the press never published anything remotely negative about the previous king, we typically had to find out from foreign press or minority separatist press. At one point, there was so much stench of degeneracy and corruption from that king (plus the ascent of a left-wing party with anti-monarchy tendencies in polls) that the powers that be apparently decided that it wasn't possible to keep the people content about him anymore, so they made him abdicate.

Now the press does talk somewhat about his exploits (probably disproportionally little, but it does) while the current king is reported as basically a saint and nothing remotely bad is ever said about him (to his credit he doesn't seem as much of a thief as his father, but if you read the mainstream Spanish press, you would think he pisses gold).