I believe the reason why this has become such a large news story is the tension between Alberta (and the west) and the rest of Canada. Alberta has rising separatist sentiment, a premiere who is extremely popular in Alberta and extremely unpopular outside of Alberta, and is on average more right wing compared to the rest of Canada. In both the media coverage and popular sentiment, this incident has been used to show Alberta and its government in a bad light, despite it not having anything to do with the party currently in power.
As long as it makes Alberta look bad it's an excuse to attack Danielle Smith and the UCP, and Albertians in general. Other Canadians eat up negative Alberta news like nothing else, and the media will no doubt provide them with the type of news that they crave. If this happened in any other province it would get 1/10th the coverage and outrage. Instead you have people online calling for Smith to face prison time for something she was not involved in. The media gets their views and the people get their ragebait.