It's noticeable that both people quoted in the article are women. Only a woman would think a beer fridge is 'frivolous'. I would counter that by saying that hairdryers, hair straightners and other assorted feminine products which use electricity are just as frivolous.
In all seriousness though, this kind of thing plumbs the depths of environmental absurdity. Whether you believe in man mad climate change or not, pecking away at trivia like this is stupid, indeed frivolous. What's next on the hitlist? Will we all be policed to ensure we only use electricity for non frivolous purposes?