The trouble is that they do not want to go as far as questioning biological psychiatry per se. That's what's really needed to make progress. Biomedical psychiatry holds out the attractions of a predictive and systematic way of understanding and treating mental health problems. No wonder people hope it may be true and psychiatrists act as though we have got there, or at least are not far away from it.
But as the article says we're being misled. It’s not only the message that is wrong but also the expectation about what can be achieved. Do we really think we can solve the problem of consciousness (see previous post), or more generally how life originates from inanimate matter? As Kant said, this is an insight which is denied to us (see another previous post).
But that doesn't mean that psychiatry is defunct. It should never have had such fanciful notions. Nonetheless people still need understanding and treatment for their mental health problems.