I am assuming this is in response to the fact that Luke tells us a census was taken, which was the reason Joseph and Mary went to Bethlehem. I would say that this is incontrovertibly a false statement. We have a record of regular censuses in Egypt, which was a client kingdom. The census of 14 AD yielded a population of 4.5 million. Censuses in Egypt were done every 5 years. This is a matter of record. This statement is coming from a person who is simply mistaken. Here is an article about a census which happened in Judea in 6 AD.
https://en.wikipedia.org/wiki/Census_of_Quirinius That these censuses happened is common knowledge among historians. This critic ought to do better research and stop making false statements, in my opinion.