Well you should be happy as tonight is the final event for the equestrian
Ive watched every single event in the Equestrian from start to finish and i havent seen any rollkur, if it was used they would have a disqualification or Max. penelty points as the horse is over flexed. The riders wouldnt risk that at such a high level. Some horses have a natural carrage of the head and neck wich may look like Rollkur, wich may be what you saw Maggie. Sometimes it can be hard to tell the diffrence in the way the horse carrys itself if you dont have experiance in that feild.
The Jumps fall with the slightest touch, unlike jumps racing where they are a hedages and can make a horse loose its balence. The Jump poles are super light and are designed to fall with the slightest touch - if you watch the HD slow motion after the jump round you would notice that sometimes the poles fell simply becouse the tip of the hoove touched the pole wich caused it to fall - One horses tail caused the pole to fall
In jumps racing a horse can compete when it is mearly 1.5 years old - the horses musculoskeletal system is still growing and cant stand the pressures of racing, hence why there are so many injuries and deaths but in showjumping a horse cant compete in a competition until they are 6 years old, they can only jump 30cm ( wich is lower then E grade ) The horse also cant compete in cross country until it is 8 when the horse is fully grown and its musculoskeletal system is finished growing and is matured.
Honestly i agree with Emma you need to pick and choose your battles