As he says in his tweets, the event features 90 sports, from Arm Wrestling and Bodybuilding to Chess, E-Sports, Martial Arts and Deaf Sports, and hosts 24,000 athletes of all ages and abilities in the spirit of physical activity and competition. It is a shame that such nonsense happened there but hopefully it will bring greater awareness to the event and its message.
Article source: https://www.cinemablend.com/news/2472014/watch-arnold-schwarzenegger-get-drop-kicked-and-barely-flinch