I would disagree with this statement and call it out for being sexist, to the point of being antagonistic and hateful towards men.
Anyone can have an opinion about anything they like.
I can believe in the great spaghetti monster and wear a noodle strainer on my head at the dmv, and raises my fists in glory chanting, pastafari!
There is a difference between believing in something and using that belief to dictate what decisions other people can and can not make between them and their doctor.