I totally agree. The frame of reference here is
"Most and Least Intelligent Royals". We would do well to remember that and not disrespect royals who don't have a BA, MA, a Doctorate, or multiples thereof.
I would think that HM's years of studying Socio-Economics, International Affairs and Diplomacy alone have more than qualified her for a Doctorate or two! It's a pity she would not accept an honorary degree or three.
Once upon a time nurses used to start at the bottom and both work and study in a hospital, progressing and examined in both written and practical exams. Now they are University qualified and more and more they are finding that fresh out of University they are not much use on a Ward. They lack the depth of knowledge and experience that on-the-job-training provided. They are considering crash courses of OJT to try to make up that difference before they let someone "qualified" loose in a Ward. Going backwards so to speak.
The rebuild after the earthquake here meant many national and international workers were required and while some had degrees they were virtually unskilled while others had degrees that they attained after first finishing a good old-fashioned, Apprenticeship and they were golden.
Defining how "Intelligent" any royal is or isn't is a sheer impossibility as we do not even have their basic IQ to start with. Worse, many people are far smarter than their formal education would suggest. They can also be far denser!
What I am trying to say is that regardless of how "educated" you are or are not, it does not necessarily equate to your level of
intelligence.