A 230 kg man on a horse, mistreatment?

A man weighing around 500 pounds wanted to ride a horse and pretend he was a cowboy. People helped him up onto the animal, but the horse couldn't take the load. Moments later, the animal collapsed under the weight. The scene shocked those around, as the horse showed no ability to withstand what was being imposed on it. The animal had to be taken into care after the fall. The episode is now shared as a clear example of mistreatment.