Just one piece of anecdotal evidence - I never actually transitioned, but was put on the pathway towards it. I felt I was being pushed too fast and other options were being shut down, leaving me with no way out except transition, so I asked for it to be delayed while I sought the counselling they should have been providing me with to help deal with the crisis I was in, but didn't.

The gender identity clinic behaved very oddly. I wrote to them seeking a delay, next time they wrote to me they said they had received no such request from me (so what are you responding to, exactly?). I finally decided to get off the trans pathway and wrote to them saying that while I still had dysphoria I was going to try to work it out myself, until more reliable medicine was available. They wrote a strange letter to me accusing me of not turning up to meetings that I had never been informed of, and saying because of this they had to cancel my placement and give it to someone who would comply with the rules. There was a further exchange when my dad got pissed at their weird evasiveness and wrote to them to say I had never been alerted to any 'meetings', and I did not want to transition any more because of the misogyny and homophobia of the movement. They wrote back saying they had no idea what previous correspondence I was referring to as they had no record of it, but they were now cancelling me because I wasn't suitable (which they knew despite me never having seen anyone yet).

Do you see? They didn't let me quit, my concerns were dishonestly disappeared, they had to be the ones to drop me, not the other way round. That way their records look like nobody is desisting, and they're doing a much better job of gatekeeping than they actually are.