Why does the #BBC have to have at least one drama series full of historical inaccuracies on the go.

And it seems they have selected Sunday evenings to host it. The White Queen was the last example of this depressing trait and The Musketeers the latest. Even the Radio Times has not managed to get it right. In last week's edition David Butcher writing in the 'Pick Of The Day' slot stated that:

all the ingredients you'd wish for are present; duels where swashes are buckled, leaping from windows, romantic intrigue, enormous flintlocks, and a costume department sponsored by World Of Leather.

Well I looked and looked for a flintlock pistol and never saw one. I saw plenty of matchlocks but no flinters. Which is a bit odd because the series is supposed to be set circa 1630 when the flintlock mechanism was fairly well established. In fact it was a French gunsmith who first incorporated a flintlock mechanism into a firearm and that was for Louis XIII in 1610.
Needless to say horribly inaccurate speech and vocabulary has not been ignored in the script. I heard the word 'bloke' used at least once among several other unlikely phrases.
For God's sake, is a little basic research really too much to ask?