History, sometimes a mother's worst nightmare

We use Mystery of History. We love it. Something the kids look forward to doing as much as possible. We, also, listen to Story of the World on CD in the car when driving. A fun, relaxed auditory way to learning about history. However, I don't recommend the segments on Athens and Spartans. Especially, the chapters explaining the differences. The characteristics of Spartans were quickly this mother's worst nightmare. The children found them immensely humorous.
Spartan boys were often sent away to military school by the age of seven.
That raised some eyebrows, especially the girls', since Daddy's Buddy is fast approaching his seventh birthday.
The narrator continues on and then explains mothers were expected to encourage their sons fighting abilities, to praise them for fighting. To which I completely responded very loudly with, "We are not Spartans!"
Later, I texted the Dad who texted back with, "We are cupidians, we love, not fight!"

A few days later, we are listening to the bits on the Olympics. Completely harmless, right? Daddy's Buddy is caught acting out Ancient Grecian Olympics with a butter knife. Big-O-Daddy-O caught the action and exclaimed, "What on earth do you think you are doing?"
DB: "I am throwing the javelin."
As quickly as I want to say, "Where did he get the idea? ?" I remember Story of the World.... History... We are suppose to learn from it so we don't repeat past mistakes. This momma, is starting to wonder if learning about history is really not a good idea.