And that guy is as stupid as the other one because in his video you can even SEE that it doesn't charge!
BTW, he's also just as stupid as his Swabian dialect. And yes, I am allowed to say that, because I'm from Germany as well.
Just have a closer look, especially when he places the S2 onto the Samsung charging pad. You see how the charge indicator icon on the S2 appears and disappears right away. Then he swipes down so that you can see the icon again. And now you see that the little flash in the battery icon (which is on when the watch actually charges) is not there. So no charging.
Just because someone is able to upload something to YT does not mean he/she is right. Or smart.