Many people talked about this subject to their psychologist, endocrinologist or surgeon. Nothing changed for years. Why is this? Our theory:
1) Surgeons and endocrinologists feel responsible for the decission to prescribe hormones or do the surgery.
Look at the gender cloud (parts 1 and 2), read the part about the Health model (part 3), read the Yogyakarta Principles (17e, see below): it is impossible to take these decissions for anyone else than for oneself.
2) Surgeons and endocrinologists want to be sure people will not regret using hormones or surgery
It is impossible to be sure that transgernder people will never regret hormones or surgery. Transgender people don't know what will happen in the future. Surgeons and endocrinologists ask people to be sure not to regret body parts they do not have (yet), they are not used to (yet). The only thing a surgen or endocrinologist can ask is: "are you sure you are unable to continue your life with the body parts you have now and are you sure you want to take the risks of hormones or surgery?"
3) Psychologists want to do research
It looks nice: 100% of the transgender people, all of them are forced to be part of your research-projects. Unfortunately most people don't want a gatekeeper. They want hormones or surgery and will provide answers that fit the pattern. Transgender activists do have copies of DSM-5 and WPATH-SoC...
4) Psychologists want to keep their job
When the Full Prior Informed Consent-model is implemented, many psychologists will lose their jobs. As long as they take care that surgeons and endocrinologists will still be afraid of being accountable for wrong decissions of patients, psychologists will keep their jobs. In exchange psychologists give the surgeons and endocrinologists what they ask for: they take over responsibility of the endocrinologists and surgeons. Even if that is impossible because the psychologists also don't know what a patient feels.
Yogyakarta Principles (17e): http://www.yogyakartaprinciples.org/principles_en.htm : "Ensure that all persons are informed and empowered to make their own decisions regarding medical treatment and care, on the basis of genuinely informed consent, without discrimination on the basis of sexual orientation or gender identity"