I wonder what the issue is. Seems to me that using something as ubiquitous as the 1 gallon milk jug makes sense. Are they really concerned that someone that's tempted to drink the entire gallon will be stopped by having to purchase more than one container? The article has a strong focus on the pricing of the vodka... so, who on the Canadian Liquor Board is getting paid to keep prices up? "Spirit of the Albertans" -- seems disingenuous to say that the locals are in support of price fixing, as the article seems to imply.
The end of the article hints at spirits-makers being able to bulk purchase alcohol to be blended, and how newer distileries/spirits-makers aren't required to make the same investment into producing their own base alcohol as was previously required. The way it reads, makes it seem like the article is being sponsored by the big makers in terms of how "small makers" have the unfair advantage and that it's the small guys lowering prices that is the bad thing.
My interpretation could be off, but my tl;dr is corporate has a problem with prices effecting profits, so hit-piece on the independents it is.
Ah, sounds like that Marlaina person would snub their nose at me. My second thought after "Huh, gallon of vodka makes perfect sense" was "bet college me could have double-fisted them and lived to tell the tale".