Speaking as a curling fan: the game has been greatly enhanced by the analogous technological improvements. Shots that used to be fever dreams are now routine at top levels of play, and the sport is better off for it. The change is even more dramatic worldwide than in Canada; teams from countries like Japan and Korea (perhaps the most impressive in this regard) have had to keep up with these advances while also generally becoming competitive on the world stage - in a sport where previously (say, a few decades ago) Canada, Scotland (the birthplace of the game) and maybe a couple of European countries were the only ones worth paying attention to.