Entirely agree. The one scenario where the dump may make sense is if you push the bike one way so you body goes the other and misses an obstacle (center of mass of combined bike plus rider didn't need to change directions). Not sure how you train your brain to think that quickly. My brain is conditioned to ride the bike at all times until the bike decides my riding is over.
Geez, that's Tom Cruise-level stuff. Far beyond my skills to do that.
I've seen a few motorcycle races where the brakes have failed and the racer has had to jump off at 200 km/h. Or if the bike catches fire they slow down and hop off in the gravel trap.
The first scenario is insane: