I mean, riding a bike is one of the most effortless things you can put effort into! They even have a couple of sayings about it: “As easy as riding a bike” and “Like riding a bike: once you learn, you never forget.”
I bet he did the classic fail which you see on motorcycles where he did not realize the torque of the acceleration when he hit the throttle and fell backwards hard.
Dirty Harry (Magnum Force): “A Man’s got to know his limitations...”
Sheet...I still ride. But it’s more safety first now....