Everyone has their own style, some make it look easy, some make it look scary as if the finger is about to get the finger chipped, you might have lot of practice, that's how you are able to do it safely. Please watch other such videos (of professionals) to see how they put their left hand (that holds the cabbage ) such that fingers are pointing down and away from the chopping knife's edge, your first finger's knuckle should be touching upper knife sides, it looks scary to watch you cut, that you are about to chip off your fingers (please watch this video to get an idea ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-s0yuSX9q62Y.html to get an idea)
1. Shut off the loud music! 2. Sharpen your blunt knife. 3. Your fingers are in the wrong position and will be chopped off. 4. Your cutting technique is so slow because your fingers are in the wrong position. 5. Your board is sliding around and that is just waiting for an accident to happen. 6. You cored the cabbage all wrong. Leave the core on so that you can slice it thin without falling apart. Every single thing you have done and shown here is WRONG. THIS IS HOW NOT TO CUT A CABBAGE. Learn before you teach!
You sound like a negative Nancy!! You couldn't list one thing that was positive at all? Like how perfectly and precisely cut the end result was?! Shame on you. Who made you judge? Your attitude is your altitude in life.