Although the stance shown by Eir during the 'soldier draw' is correct (back muscle draw instead of arm muscle draw, drawn to the side of the face with a European bow), the hold is too harsh (you don't need to grip the entire string, just use the first digit's groove of the three middle fingers).
Her explanation regarding the hunter and soldier draws are also somewhat correct, but the depictions aren't. Soldier draws were usually used in medieval warfare to create suppressive fire, so the draw weights are harsher and they're usually aimed upwards (a different case would be for horseback archers, but they shoot with a different stance). 'Hunter draws' are certainly not horizontal. It's slightly tilted to accomodate for trees (unlike misconceptions, hunting is most ideally done from above the trees), but the draw only reaches the side of the hunter's face. It's why the hunter draw is easier to aim: the eye is close to the arrow shaft, while the 'soldier draws' usually require the archer to draw as far back as he could to help with the suppressive fire.
Horizontal draw limits the length of the draw that can be achieved because the strings will be stopped by your own torso or pits, so it actually gives out very weak power outputs and is generally just seen as action choreography rather than technique.