The final line in what Albert writes does ask that question about the specific occupation, but right before that he had stated more generally that men are not fighting for more men to study traditionally female-dominated subjects or jobs like primary-school teacher, nurse, PR officers and therapists. So it makes sense for Dubner to address the more general "female-dominated professions" than the specific "therapists" part. I also don't see that much difference in asking "why don't more men do [some female-dominated profession]" vs. "why don't men fight for more men to do [some female-dominated profession]". I think in this situation the answers to either question are going to be largely related.