Nobody is saying that men can GROW a cervix. This is saying that some people (transmen, not transwomen) who identify as men may have a cervix, and be thus at risk of cervical cancer. One could debate whether they are really men; one cannot debate their need for cervical screening.
But I think that a man could grow a cervix, or a pig grow wings, or a dog start meowing, more readily than an attendee at that conference could grow a brain and a heart!