At 20km/h it might not be so easy after all.

I think they actually meant to say "It is likely that you will be thrown off the front of a YikeBike in an emergency braking situation - this is very easy as there are no handle bars in the way." :P

I really don't see how jumping off front of the bike is intuitive though. I mean, it's like trying to jump forward from the chair your sitting in. This in itself is an unnatural action, and to top it off the bike is gonna be moving forward when you jump forward off it. I foresee some severely bruised backsides.

In an emergency, the thing in front is generally what I'm trying to avoid.

I get what they're saying about not flipping over the bars, but personally, I'd rather be able to bail out to the back or sides. The way they are describing basically just throws you into an object, whereas with the back/sides you're able to avoid objects and roll on the ground. If you're going fast enough to flip over the handle bars: (a) you're probably not going to be able to brake in time anyway, and (b) it's probably not much better to just get launched straight into whatever you're trying to avoid.