I watched some of the first season and was actually already open to all the alt archaeology stuff with the precision arguments people make, but the more I looked the more clear it was just BS.
I think the biggest thing about the old world people miss (and thus makes alt archeology so attractive) is the mass use of slaves and general lack of caring about human suffering.
I couldn't believe Red Fort was built in 9 years in 1640, until I had that epiphany, for instance. https://en.wikipedia.org/wiki/Red_Fort