From the context of the Tweet, he appears to be referring specifically to the
Shorter BMJ Blog commentary. But as far as I am aware, he has not set out what he considers these "good points" are.
It's not unusual for someone who hits completely the wrong note in the main, as Shorter clearly does, to also sometimes make apt or insightful comments. Shorter does make some good points in his
BMJ Blog criticizing the O’Sullivan's view that stress and emotions cause functional diseases. For example:
She [O’Sullivan] ends up referring many of them to a “psychiatrist.” This is the most useless referral imaginable, as psychiatrists shun and fear psychosomatic patients and can usually do little for them because the patients themselves reject the whole notion of “psychogenesis”; patients usually accept such referrals only with the greatest reservation, convinced – not entirely incorrectly – that they are being turfed.
However, having criticized O’Sullivan views, he then merely argues for his own psychobabble theory on functional disease etiology, based on the idea that the symptoms of functional diseases are created by a sort of hypnotic suggestibility of people: that is, he thinks functional patients are expressing symptoms that are sanctioned by contemporary culture, or expressing symptoms that are fashionable among the upper-middle classes.
In fact, given a choice of the two views, I think O’Sullivan's rather than Shorter's may on rare occasions hold a little bit of water, because I suspect that there may be rare cases of ME/CFS that although underpinned by viral infection, and although an organic disease, may involve some learnt stress response that impedes the immune response and thus viral clearance. But these I think will be rare cases.
But Shorter's idea that functional diseases are memes propagated by the culture is beyond the pale of scientific common sense.