That's interesting.. I've been tying since 1963 and never learned to whip finish. This is George Herter's fault. His instructions for whip finishing were completely indecipherable, so I gave up and simply half hitch everything. I have a fly come unraveled every now and then, but not nearly as often as I probably deserve for having never mastered the whip finish.
Anyway, I do a bobbin-less variant of the video trick/method sometimes on larger flies. I simply make the first half hitch loop on the hook shank and then trap it with thread tension and then loop it around manually another time or two.
I might try and learn this thing with the bobbin, but I'm not sure I have another 57 years to get it right...