That video has been discussed a few times before
Yes, it shows a different technique than what is most often recommended here, but I'm ever so sure that his razors are quite up to snuff regardless.

Now, keep in mind that this fellow is a seasoned shaver, and has spent years developing his technique.

I keep my strops rather taut, and that seems to work for me.

For someone just starting out, I'd say go with the recommendations from the wiki and the videos of AFDavis11 and hi_bud_gl.
Check out the stropping section of the wiki here You can see AFDavis11's video in that article as well.