It seems that Angela is trying to somehow debunk all types of psychosomatic symptoms, which is clearly ludicrous.

Well, that would be ludicrous of her. So it's a good thing she never says it.

I think you're overstating her argument to knock it down. She never says that psychosomatic illnesses don't exist or tries to debunk all psychosomatic symptoms, but claims that a psychogenic etiology has historically been overused when diagnosing illnesses, has harmed patients in the past, and harms patients still. And I think we can all agree that this is true. It's also true that medicine has historically used "mind" as a magic want to explain mystery symptoms in the same way that people once used God to explain inexplicable phenomena ("mind" is the "God of the gaps" of medicine).

Of course it's the case that the mind-body connection goes both ways, and that mental state can affect things like blood pressure, arterial inflammation, brain function (although this borders on the tautological), pain sensitivities, the cardiovascular and immune systems, etc....

But medicine has far too often relied upon the magic wand of "mind" to explain symptoms which later were discovered to be caused by non-mental factors. How many conditions do we currently treat or strongly suspect to be psychogenic? Now ask how many conditions have ever been treated or strongly suspected to be be psychogenic. Divide the first number by the second and the paltry fraction you get is a constant indictment of the inaccuracy of the knee-jerk psychogenic diagnosis of unexplained symptomologies.

At this point I'm beginning to suspect that humans didn't evolve to naturally conceive of the human body materialistically and that, by virtue of trying to figure out why people became sick in the thousands of years before the advent of modern medicine and by analogizing how the body works based upon how we perceive our minds to work humans have a naturally vitalistic sense of biology- we just don't naturally think of the body as being governed by atoms and physics and naturally want to attribute its activities and ailments to mind or "life-essence" type forces. This vitalistic tendency has manifested itself historically in the attribution of medical problems to animism, demonic possession, Galenic vitalism, the repression and canalization of Freudian psychosexual energy, etc... The overuse of the psychogenic explanation in modern medicine is just the last surviving manifestation of this trait.

This isn't to say that psychosomatic symptoms and conditions don't exist (they certainly do), but that the psychogenic explanation has too many times been the first adopted when dealing with unexplained symptoms and the last abandoned. It also has an historically low batting average regarding accuracy. And in the interim period between adopting and abandoning a psychogenic etiology doctors often mistreat patients and blame them for their own illnesses. This is very much in accord with the article and none of it suggests that psychosomatic symptoms don't exist.

And if you haven't read it, you might want to check out (this book.])https://en.wikipedia.org/wiki/Illness_as_Metaphor)