He's right DNA editing will be the most powerful tool ever to exist on this planet, more power than any of the most powerful tyrants in history have had. We make advances on that front every day. Genetically modified humans have already been born. So what're you suggesting? We just don't use it? Harari's clips used in the video are from a warning to humanity that this power is coming and we need to be ready for it so the elites of today don't screw us with it like the elites of the past did.
Here's the whole talk so you can listen for yourself and form your own opinions, rather than slectively edited clips.
Why would he be saying all this out loud if it was some nefarious plot? Just execute it. This is the real world, you don't have to outline your deviousness point by point like some Bond villain. Even the commentator in the linked video says that. This is a dire warning that we should all be heeding. We're on the same side, the people's.