I would not - independent of gender identity and body parts.
I can understand detransitioning as a concept. But, as you point out, this is something a little different. My take would be that there is a very strong chance that someone who has traveled the kind of journey you describe is either prone to rash/impulsive behavior OR has not truly found peace with him, her or hir self. I would think, "Well, you think you've figured out how you would like to live your life NOW, but who is to say it won't change again?" And while I think people should feel free to express their gender as is true to their gender identity at a particular moment in time, I personally crave stability in my life that is incongruent with what you're talking about.
It might not be true in your personal circumstance. I don't know you. But I would be waiting for the 'next' shoe to drop, so to speak, with someone who has traveled that path.