Michael Hirst is a shit writer
And also a poor violator of real history which is far more fascinating, not his fantasy history drivel.
I agree that few productions ever have been ''historically accurate'', but his writing (the Tudors, Vikings) takes the piss.
I think that a certain respectable level of historical loyalty is important on any topic because those who decide to learn their history from watching the rectangular screen would be in a more educated place. And real history really is more interesting, dramatic and tragic.