Alot of things bother me about shows, but the main thing is when people obviously have no connection with their animal. When it is so obvious that they did not train/take care of their horse. Someone else did it for them.
I cannot imagine having someone else take care of MY horse. If I'd show my horse, I'd take care of and train my horse. Maybe have someone help train them, but it's just stupid to not take care of your own horse. It makes for bratty children/teens and even adults. I really just can't stand show people. Whether it be horses or dogs. I show dogs, but it just kicks my puppy when somone just doesn't want to be there.
If you don't want to be at a show, or don't have the dedication to take care of your own animal, then just don't come. (Sadly there would be hardly anyone at shows, then.)
The thing is that there are people like myself who have horses who are Open caliber horses and to get them shown at that level you MUST have a trainer or be a trainer. So that means your horse goes to the trainers and they stay there. It takes about 2 years to train a reiner and about 5 years to finish a reiner.