Not wanting to work in a crowded home has nothing to do with disliking your family. Kids are loud. They run around the house. They watch TV with the volume set too high. They have excited calls with their friends. Many home builders skimp on noise insulation for interior walls.
The core issue with dressage is that they are putting the medal on the wrong neck. The horse is doing all of the work, they deserve all of the credit. Yes, being a dressage rider is (probably) hard work, but so is being a jokey or a wrestling coach. Also, all animal training facilities should automatically be on animal cruelty watch lists and subject to random inspections.