Not at all surprised.
My wife has Ehlers-Danlos (genetic connective tissue disorder) and at one point, in what was an altogether shitty diagnostic journey, she had a doc tell her she was too young to have EDS.
Too young to have a genetic condition. Right.
It's even weirder/frustrating as shit working as a radiographer at a public hospital and having requests coming through looking for the rarest conditions while completely ignoring all the patient's signs and symptoms that point right at a common, easily treatable disease.
There are good doctors out there but in my experience they are very much in the minority.
In Australia btw.