system
A chat on subreddit /r/PoliticalCompassMemes
human
Absolutely disagree, at least if you're talking about a system like Canada's (which I'm knowledgeable about):

(1) Canadian parties are FAR more homogeneous (in terms of policy) than the American parties, because the party leaders in Canada set their party's policies. In the US, no matter what Biden thinks, Sinema can and will vote however she wants.

(2) The American parties are much more like coalitions of parties elsewhere. AOC and Manchin would never be in the same party in Canada. Bernie and Buttigieg wouldn't either. And so on.

(3) In Canada, you can't vote directly for a PM. You must vote for someone in their party. What if you're like me and you like voting on a politician by politician basis and not a party basis? Too, bad! Become highly skilled and move to the US, where you'll get paid more, taxed less, and can actually afford real estate.

(4) Does Canada have more than two parties? Yes! Amazing! Has Canada had a PM who didn't represent one of the two primary parties? Nope! So... what you have there in Canada is a two-party system, in effect.

(5) The Senate, am I right? How do they get elected? By the vote of one person, the PM... Can you imagine if Trump could have just appointed Senators?

I can go on, but I'm already bored and angry at the same time thinking about Canada.

The American system has flaws, but systems like Canada's and the U.K.'s are deeply flawed, too. They are no model to look to.
gpt
Uk one is a 2 party system in practice too, first past the post makes it near impossible for other parties to get a foot in the door. 

However I like that we vote for party and not PM, makes it less of a popularity contest and more about policy (in theory at least)