This doesn't sound very respectful or supportive of all people who detransition.

Some of them do regret transitioning. Do they not also deserve compassion and support?

(Note--if you're basing your statistics and views on detransitioning on papers who select people who identify as trans, and then ask those people if they have detransitioned, you're seeing a selection effect (which the authors themselves recognize). If you instead select people who identify as having detransitioned and ask about their reasons, it's quite different: https://pubmed.ncbi.nlm.nih.gov/34665380/. Overall, what happens at what frequency? Apparently nobody knows right now. But we can't discount as nonexistent the people who detransition and view their transition with regret, as a mistake, and conceptualize what they've done as a U-turn.)

So shouldn't our goal be to extend understanding and compassion towards everyone, regardless of their life journey? If someone marries, and gets divorced, and says they had to make a U-turn, regretted and will always regret getting married...shouldn't we still do what we can to support them through a difficult time?

So...I think the message you're sending is a good one in concept, but I'm not sure you've managed to convey it in a supportive way. I do think trans people have a vastly better idea of what it is like to be in this kind of situation than does your garden-variety transphobe, so it would seem to me that the people who felt it was all a mistake still would be much better off viewing and being viewed by the trans community as a cousin of sorts than as an enemy.