I've seen that as the evo position on many a thread.
And if you are against all birth control methods, then raising the specter of the pill being an abortifacient is a red herring as use of the pill would be opposed even if its mode of action was a 100% prevention of fertilization.
The thread is about the abortifacient properties of the pill and that women have been lied to. If there's no conception, there's no abortion. Prevention of fertilization is not the same as killing the baby that has been conceived.
The thread is about birth control. Some people oppose all methods of birth control, even those that prevent fertilization.
It is analogous to those opposed to all forms of capital punishment saying that they oppose electrocution because of the pain involved.
You may have seen the question posed as to whether a miscarraige would or could be investigated as a possible homicide under a "life begins at conception" doctrine.
You will not be able to back up the claim that anyone proposed that a miscarraige, in and of itself would be a criminal offense.