IMO, this is a core issue for the BPS supporters. They, like anyone else, see themselves as good people, competent people who do good work to be admired by the general population.
This idea of harms strikes the kind of blow that is too painful to acknowledge. So they (probably with a frisson of anxiety) cast about and rationalise that it must be something else -- not that. Without, I think ever meaning to or consciously setting the whole thing in motion. The rest is just doubling-down.
Having read (some of) the comments from BPS stakeholders what strikes me is that (ironically) they are mired in emotion (and again perhaps a hint of panic).
I doubt Phil Hammond recognises the Phil Hammond we see from our POV. He can't. Few people could.
So now faced with the comment from Ms Ephgrave -- shhhhh, secret, secret. For the patients sake of course.
And now I'm just drivelling on but one could see the BPS'ers as examples of success of the power of positivity framework. The dark underbelly of which is that it is not a particularly good reflection of reality.
Now reality has come to call . . .