Earlier quoted context omitted.
I have never seen any article saying tariffs will "only" hurt American consumers. They hurt both sides and every article I have seen acknowledges this. However, American news sites tend to focus on the effects in the US, while Canadian news sites focus on the effects in Canada.
I may have worded that wrong. Articles say that they will hurt American consumers and don’t address the actual purpose of the tariffs, which is to put political pressure on their targets. If the tariffs didn’t have at least some chance of succeeding at this, the targets wouldn’t be talking about retaliation.
The retaliation is posturing for the other party and for the electorate. If you’re driving in a car and your passenger pulls the pin on a grenade, you can “retaliate” by pulling the pin on your own grenade.