That's a great vid! The guy got a shave. Full stop. It's not how we might do it, or recommend doing it, but clearly that works for him.
Shaving really is a simple concept - take something sharp and scrape it over your face to remove hair. The rest is just bells and whistles. I like this video because it really does highlight that fact.
As for the new straight user issue - that's a fair call I think. Just like it's a fair call to warn a learner driver not to watch formula 1 and think that's how you drive a car.
James.