I guess to each his own, but the fellow in the video might just go a little overboard with the safety equipment. I'm surprised he wasn't wearing goggles or faceshield, shower cap, etc...
I've always taken a little different approach to cleaning one...if I want to keep the whole animal, but I guess we can all end up with the same results in the end. I tend to clean one similar to how I would do a deer, but I take most of the skin off of it before I open the body cavity, to keep everything cleaner.
I do agree with the wearing of rubber gloves and keep them handy whether I am doing hogs or deer.