The first video is just nonsense, but if that second one is accurate it shows just how game-changing this stuff could be. I would buy a phone for the image stabilization alone.

In the second video they use a van to record, not a bike, look at 0:27 glass reflection.

With a ban I could also get stable shots.

Trying to fool customers, they are so desperate.

It's a bit misleading. They used a rack with unstabilized and stabilized phone to film both versions at the same time. Both videos are filmed from the van, so the OIS is not fake. They showed this rack setup in their launch event.