she then found an apologist website with an article by a young earth creationist who made some ludicrous claims about how archaeologists who place the pyramids at a later date have been 'shouted down' by others.

Maksutov, about the dating of the pyramids, there is a growing number of 'radical' archeologist that suggest that at least the Great pyramid coud be upwards of 10,000 years old. It is probably THESE ones that are being 'shouted down', not the general consensus that they were built around 3200 BCE. Again, it's a case of taking things out of context.   I personally lean towards thinking the Great pyramid and the Sphinx WERE older than the general consensus but certainly they are not younger.  THAT is ludicrous.

Keep chipping.  I do think you are making some progress.

Only those who will risk going too far can possibly find out how far one can go.

t.s.eliot