Abraham was not impotent, but Sarah was unable to conceive- hence the “borrowing” of Hagar to produce a son. According to the criteria above, the Roman Church would not have married Sarah and Abraham because the two could not produce a child. But the Lord is Great, and Sarah was able to conceive even though men thought her to be barren.
Didn’t the same thing happen with St. John the Baptist’s parents?
False. As I have said about ten times now, impotence is an impediment to marriage. Involuntary sterility is not.