Blowing bees out of supers is fairly standard for bee farmers in the UK and Europe as well. Don't blame the Canadians. ?
In the above videos he's clearing partial supers to be robbed out, once, at the end of the season. From other videos I've seen Mr Steppler uses clearer boards in his production sites when he can be taking off 3-4 massive boxes of honey. Visiting apiary twice, first time lift supers with crane/picker insert empty supers and clearer board, second time lift off cleared supers.
Would be more profitable to visit once and blow the bees out of the supers but he doesn't. Some UK bee farmers do.
If you make your living from honey production being 'nice' to your livestock by taking more time may put you out of business.
#edit Keeping 1000 to 1500 colonies in a shed over winter for 5-6 months is extraordinary
