When I first looked at this topic, I thought it was going to be a huge mess. But, I was wrong!
My opinion is that there a ton of crap in EVERY discipline - jumping, dressage, western, halter, saddleseat, trail, etc. when it comes down to showing (most of the time).
Anyway, I hate the treatment of these animals. I don't think saddleseat has to stop but there should make a law that only "people with a brain can own horses!" (Meaning that people wouldn't neglect, abuse, etc. them). Obviously, the "saddleseaters" on here have a brain, and realize that there is crap in that discipline however treat their horses nicely and with respect. The only thing that really drives me up the wall with saddleseat is the chains and shoes.
But, this is coming from a person who doesn't have experience with Saddleseat, so please excuse/correct me if I'm wrong.