I think it’s less an obligation to hate your heir as opposed to being raised in an environment when you witness your family constantly plot against each other and slag each other off. Notwithstanding courtiers and other aristocrats winding things up between the generations to progress and enrich themselves.
And not only would you have needed to keep a close eye on your immediate relatives, your extended family abroad could be tricky too. The UK has literally imported royals with tenuous claims before and Saxe Cobergs (Windsor was a family name invented in WWI to preserve the UK monarchy) fought on both sides of the Great War.
It all results in a high pressure environment that us modern snowflakes would describe as “toxic”.
You will note how chilled out by comparison Liz was when it came to Andy. Andy came with less responsibility and less of a perceived threat to her dynasty than his older brother. With any luck, the positive spin presented by the Cambridges as parents contains some truth and George won‘t be packed off to an austere boarding school to toughen him up.
duck it, I’m getting my coat. I need to get out more.