The debate over whether "reparative/change therapy" is valid or harmful usually focuses on whether it's POSSIBLE to change. That's the wrong focus. For it is also possible that there is a teapot orbiting the sun somewhere between Mars and Jupiter.
Whether some aspect of "reparative therapy" effectively treats depression or other issues is a sideshow. The core part of this therapy model is about repairing an aspect of a person's psyche seen as broken and changing something about a person seen as abhorrent, not the treatment of depression or any other issue. Assurances from a therapist that change is possible leads a person engaging in such therapy to expect that change will occur with enough effort. That sets a person on a path with an endpoint that more often than not looks like the edge of a sheer cliff.
For me, the focus in this discussion should be two-fold.
First, the RISK of harm. That some people have found temporary "success" or that many have survived run-ins with agenda-laden therapists who skirt the edges of professional ethics does not negate the long-term harm large numbers of people have experienced. To the extent that legitimate therapists seek to use this model, a meaningful conversation among their peers and especially with their patients about the risks involved, is required.
Second, and just as vital to the discussion, is WHY advocates for "reparative therapy" begin with the assumption that change of one's sexual orientation is superior to acceptance of one's sexual orientation. When push comes to shove, "change" advocates point to their interpretation of the Bible (or other religious text) and historical norms that are no longer widely accepted (and some that have been discredited) to justify their position. That's not science.
Call me jaded, but I suspect that a factor in the thinking of those in the APA task force allowing for this therapy model was fear of "reparative therapists" creating their own echo chamber institution that the APA would then have to spend time and effort countering.
To paraphrase Lyndon Johnson, it's probably better to have the "reparative therapy" charlatans inside the tent pissing out, than outside the tent pissing in. Of course, I'd prefer they deposit their excrement in the toilet where it belongs.