It may be an exercise of their expertise if that change in culture was partly caused by recent medical research findings into trans, such as the propensity for

It may be an exercise of their expertise if that change in culture was partly caused by recent medical research findings into trans, such as the propensity for depression due to alienation, or the efficacy of "gender-affirming care" at reducing depression. I'm not an expert in the history of the field, or the literature, but I wouldn't dismiss the proposition out of hand.