@DroopyClematis
Isn't the Olympics about a human's prowess, not a horse's?
Not a fan of using any animal for sport as it involves coercion.
Just wrong.
No, it actually doesn't involve coercion. What it involves is building a trusting partnership with your animal - in this case, horses - and gradually teaching them what you want from them, by way of rewarding the tiniest step in the direction you're aiming for and ignoring "mistakes". A Warmblood horse, those most commonly found in the upper echelons of dressage and eventing, is in the region of 800 to 1000 pounds in weight, whilst a Thoroughbred as racehorses all are is not much lighter. Believe me, if it comes to a battle between horse and rider, the horse will always win.
As to your comment about it being about a human's prowess - to be able to ride well at ALL, never mind at a competitive level, takes fitness, knowledge and finesse. Anyone can sit on a lovely, placid pony-trekking pony: but that doesn't make them a rider, it just makes them a passenger.
No horse - or pony for that matter - will jump an obstacle that overfaces it. That's why you get refusals and runouts.
Just to give you one example to illustrate that coercion's not involved I'm going to include a link to one of the best sprinters of all time, an Australian horse who won almost $AUD 9 million before he made the decision that he didn't want to race anymore. (As you'll read in the article he's much loved and in a new career now, NOT the dog food factory.)
www.smh.com.au/sport/stubborn-as-a-mule-the-champion-racehorse-that-went-on-strike-20191007-p52ydd.html