>>64217403
That video is specifically about maximizing range, not about accuracy. It also doesn't matter that much, because war archery is not a solo sport.
Agincourt for example had an estimated 5000 longbowmen involved. With 10 arrows a minute, you've got 50 000 arrows going down range each minute.

Do you know what a beaten zone is? The inaccuracy is not an issue when the amount of projectiles landing in the area is so large, statistically every single man is going to be hit.