It's your choice and if you evaluate the risks that accompany potential healing too high then, sure, the best and logical thing to do for you is just to avoid it.

I have taken the risks, I trust my gut in terms of people and so I knew that I can trust my T before I was really able to trust him and I have gained enormously from it.

Of course he hasn't laid out any plan or clear methodology (aside from practicing psychoanalysis) because that is just plain impossible. Like it is impossible to lay out concrete plans and methodology how to raise happy and self-confident children, it is impossible to do that when attempting to help someone to heal from horrible childhood wounds.

If you want plans and clear methodology and scientific validation then I guess it would be possible to devise all such methods. However, I don't believe such methods would be useful for anyone for the end goal of healing. Yes, you would know exactly what is going on and how long it takes and what is exactly happening, you would have control over the process - but it would be useless because the process of healing cannot be controlled, it can only be trusted. I chose to heal and I'm assuming other people here choose that too, even if it requires taking risks and spending lots of time and money.