It would appear that the ‘virgin birth’ is not very high on your list for fundamentals of the faith.
Your comment is a non sequitur.
Luke 1, which comes before Luke 2 (funny that), clearly makes the case for the virgin birth. If your believe the virgin birth can be denied by replacing “Joseph and His mother Mary” with “parents” after the declarations in Luke 1, well, I really don’t what to say to you.