The Matthew quote is Jesus actually quoting from Genesis. The author does touch on the Genesis part of the Matthew quote.
Natural law teaches that there is no means whatsoever that a penis in a rectum is going to produce combined DNA....a baby... the ULTIMATE “one flesh” that is created by a Godly union of man and woman, of sperm and egg.
My undergrad degree is in Biology. 30 years ago I had a professor who pointed out that our understanding of how DNA determines sex is “the New Biology.” DNA can’t be argued against. The code is absolute. The Human Genome Project failed to find the so-called Gay Gene the apologists were just sure must be there to excuse such behavior. For homosexuals, literally every cell in their bodies cries out against homosexuality, and belies the assertion that “homosexuals were made that way.”