You are arguing for what, unfortunately, is the status quo of Hollywood historical fiction. But just because something exists is no recommendation. Grania is arguing for what should be. I agree with Grania.
I look at the recent Exodus and Noah's Ark movies as failed opportunities. Hundreds of millions of dollars were spent, in an effort that would've been more exciting and probably more successful if the movie makers had stayed within known historical context.
What I always found amazing is those romantic novels with a historical context. The readers of those novels (supposedly the lower end of the spectrum) are said to be relentless in their demand for historical accuracy.
I’m arguing for the status quo of fiction in general. And what it’s always been long before cinema was invented.