Yes, it does make tons of bubbles: all of them will be outside of your brake system, which is the point of bleeding them.Pin head, wrong way to bleed brakes. That technique will make tons of little bubbles.
I don't mean to be disagreeable, but that is just BS. You don't know what you are talking about.That's exactly wrong. I hope none of those people died. No they won't be outside of your brake system, they are harder to remove and will re-group in to larger bubbles after the job is done.