Some of those accelerated RN programs have additional requirements, beyond the typical ones mentioned. Pitt's program, if I recall, also required 3cr abnormal psychology and a specific pharmacology course that was only offered undergrad by Pitt itself.
Actually, for people who are not already well-versed in pregnancy, mother/baby, labor/delivery, and haven't had prior exposure to nursing, say worked as a nurse aide, I think the accelerated programs might be far too overwhelming. The ones that are only 16-18 months have you covering med-surge and mother-baby stuff at the same time, in the same semester. I'm female, but was never interested in children or motherhood. I went to a diploma RN hospital school and it was 24 months but the workload for it was staggering and kept me consistently buried and running on no sleep and hating life. They ran "integrated curriculum," which meant you just had to take whatever the school threw at you. I am very bright, and I worked very hard. But in the end, I left in disgust at the timewasting activities and the grinding workload and how much harder I had to work at it than the mothers and homemakers did, just because I have a sci and tech background and NO healthcare of motherhood. I imagine a man might be up against that same obstacle.
What I learned is that nursing courses are easily 3x more gruntwork than any other college work I ever did, including engineering. And nursing is not really science; it's far closer to motherhood. The physicians get the science. Nurses get patient care. It's not the same thing.