This is an anecdote, and also data; an outlier data point that needs to be accounted for.
A member of my family, who I’ve known well their entire (20ish years) life, is transitioning (M->F). At age 6, they were drawn to female characters. Throughout childhood (and beyond) when they played computer games, they would make a female character. They strongly resisted coaching to conform to male stereotypes, like stiff-upper-lipping pain or putting up with discomfort. A few years after puberty, they became more and more depressed, then suicidal. They described feeling that the body they were in was wrong, and felt life was unbearable. After starting transition, the suicidal urges disappeared. They’re much happier, and planning to live a long life.
For her relatives, this lifts an immense dread. The family she sees day-to-day is very accepting, and she’s found a larger trans community online. Where there was despair, now there’s bright hope for the future.
This is what transition is about, not a ‘social contagion’ but fixing something fundamentally askew.
This comment is clearly a statement of support for PZ’s OP, and for trans* liberation in general. When daulnay later asserts being an ally to trans* people, there’s a reason for that. They do seem to be speaking up in favor of gender liberation and against ATR (Anti-Trans Reactionary) philosophies at least some of the time. But I’m not here to praise good daulnay comments, but to criticize the bad ones. Trans, genderqueer, non-binary: lend me your ears.