It’s not so much about the fact that the horses are high strung, its just a different style of riding. More contact is needed in english riding because if your horse is moving properly off its hind end, then you use the contact on its mouth to control your horse’s energy and direct it where you want it. I was taught that you want your horse to be like a spring, loaded with energy in the back but controlled it in the front until you decide to release it (this is especially important when jumping!).
I’m not as familiar with western but the judges look for different things, it’s just two different styles of riding. To really find out why the two styles are so different you should look into their background, western disciplines come from ranch work, and sensibility, soundness, and the ability to do a hard days work were valued above all else. The western disciplines reflect that (well..most of them).
Hope this helped!!
I’m really not an expert on this subject but I also think it has to do with how the bits are made. English bits require a more definite contact, because the reins are closer to the horses mouth. On the other hand, a western (curb bit? idk sorry xD) doesn’t need as much contact because the position of the bit makes the reins movements more defined to the horse, even with the slack in the reins. Sorry if that didn’t make any sense xD
tbh hearing people down mares because “they’re moody” and then hearing the same people talk about staying home from school/work because their period made them feel completely awful and they didn’t want to do anything makes me laugh.
if you can have days where you feel like shit and don’t want to do anything, why is it such a horrible thing for a mare to feel the same way?