Nothing I can add. Interesting youtube video, not as bad as most but then he doesn't try talking about history or variations. One thing I can point out is that his choice of tools is not ideal. I suggest using wood or plastic tools for disassembly. A tooth brush handle cut off at the brush, a chop stick and/or a popsicle stick are other options. A screw driver with the shaft covered with a piece of tubing is another idea. Use a screw driver for screws. Any prying or pushing with a wood or plastic tool. That way if you slip you will avoid a nasty scratch.
Regards,