I'm quite certain that Canada was warned by the IIHF to take it easy on the Slovakias and Koreas of the world and that 18-0 wins would lead to the quick demise of the event. Obviously they got the message...
https://www.usatoday.com/story/sports/winter-olympics-2018/2018/02/18/womens-hockey-tournament-expand-2022-winter-olympics-beijing/350236002/
Serious as a heart attack!