It is reasonable and true to say that the fraction of abortions that result from a rape compared to all other reasons for abortions are vanishingly tiny.
It is illegitimate to try to explain this with a crack pot theory that implies that women who are forcible raped, and get pregnant, probably enjoyed it.
His theory said nothing of the kind either when he said or when it was originally advanced by Dr. Willke, head of the NRLC. Both make it explicitly clear they are distinguishing between forcible rape and statutory rape. The notion of enjoyment was not referenced in the slightest. Their theory about pregnancy only applies in a forcible rape, not in a statutory rape where there may be consent from an underage woman.