He all but says it bluntly, the gender treatments are being given to control patients:

At that time, schizophrenia was a negative indication for sexual-reassignment surgery. However, the patient was quickly assessed and taken on by Charing Cross Gender Identity Clinic. In my opinion, switching gender likely was a strategy for immobilizing his frightening temper and fear of psychotic outbursts (as women are stereotypically less violent and threatening). I wrote to Charing Cross recommending that the psychotherapy should be allowed to continue, and that the gender-reassignment treatments be put on hold, so that these deeper issues could be addressed. The team treating the patient indicated their disagreement and continued with the referral.

Does anyone know what connection exists between the Tavistock clinic and the infamous Tavistock Institute?