It just underscores the difference between those who only go by the Book, and and start anew each generation; and those who are free to work on the ideas of those who came before.
Like you, I was stunned that such a thing would even be questioned. It is ironic that those who think it "obvious" that a man and wife must have sex, can not see the obviousness of a mother being related to her Child.
And, the implications for the Incarnation are perilous.
SD
Chapter and verse, please.