And it is true that is what therapists aim to do - let the patient find their way and explore in a safe space. NOT advise them not to do something or give a strong opinion - that is conversion therapy.
This is where this new bill has the potential to enrage both sides - because as a therapist, my remit is to help a client choose for themselves, so I would neither affirm them as a woman if they were a man (or vice versa), nor would I affirm that transition is the wrong thing to do (i.e. because you cannot change sex, even if I believe that personally). The only "affirming" I would do would be to acknowledge their thoughts and feelings as their own.
Having said that, a large, significant caveat:
We as therapists are plunged into grey areas when it is clear that what a client believes is one thing is plainly something else - when a client believes that they can escape trauma and abuse through the deeply held conviction that they are "in the wrong body", for example.
When this is the case, it is my job to help a client address and process the trauma and its roots, not to pander to the client's maladaptive responses to trauma.
If I were to go along with everything a client believed? Well, that way is damaging to the therapist, and devastating to the client.
So in cases like this, I think that the phrase "watchful waiting" also applies to adults who are in the kind of abject physical, psychological and emotional pain that this man is clearly experiencing. To ask them to hold off on making any decisions; to try to stay with the process - including the pain; to walk with them through it. Also to refer appropriately in cases where a patient's life/health are at stake (I would not refer to a gender clinic in this case), and to make an intervention if I felt a crisis was so severe that the therapeutic environment wasn't enough.
Essentially, it is never about a blanket set of treatments/approaches or a particular path that a therapist commits to and then doggedly follows - sometimes to the peril of those in their care. It is about a moment-to-moment response to what is arising; close supervision; and knowing if and when that instant arises that more is needed, or where a therapist's ceiling of expertise has been reached.