I am not convinced that the visitor was young.
They said they had a child.
What seems to happen is that some people get just enough information to find something credible. Like the whole uterus transplant rabbit hole, or the its a vagina because someone can stick a penis into it.
Whoever they are, they are operating on sound bites being fed to them and a heap of other people and considering it is expert knowledge. Hence the demeaning and belittling that keeps coming such as 'how do you not know this' exclaimations.
Reader: we don't know 'this' because it was misinformation. We have already heard it, checked it and found it to be a falsity. Either completely false or a misrepresentation of the truth.