I can't say...never seen the video :) I dip my own cells and graft into them. I've done some experimentation with wax vs plastic push-in cells and the wax has consistently out performed the plastic. And yes, I've tried spraying the plastic with sugar water, letting the bees clean them for a day, dipping in really hot wax for a very thin coating and still gotten similar results. I'm not saying that you can't make queens with any of the kit "systems" out there but for me, I'd rather not spend the cash...what I do works well for me and seems to be a bit easier than having to go into the hive(s) two or three times just to get the right larvae.
Scott