Canada

I've been watching the curling through these Olympics, and after this was done there were reports that other nations teams also have claimed to have done this before, and that they don't think it requires extreme policing like the Swedish team suggested. The latter half of their argument led me to believe it happens a lot more than we knew before this incident and they'd rather this not become a constant issue. Sounds like the Swedish team has been trying to accuse the Canadian team of this for a few years now, and have gotten a reputation internationally about it as sore losers.

So it's only "what the Canadian team is known for" because of the swearing response, and the fact it was broadcast everywhere after Swedish media blew up about it, and why they only had umpires watching as of the next day. It seems like the rest of the world doesn't care about this, and is more upset about the aggressive response (which I think everyone can agree with)

this is a common strategy among cheaters in curling

Very confidently stated, but I really don't think it is.

it is illegal to do for precisely that reason.

It's illegal because it's way simpler to implement a "no touching" rule than to try to define game-changing and non game-changing touches in a way that would be enforceable.

And again, I have absolutely no problem with the rule being enforced, even though I don't think for a hot second that it impacted the game.