Canada and European nations are not very 'liberal' in the sense a lot of people would like - they are communitarian.
We lament Trump breaking norms ... the office of the Canadian PM is almost only bounded by norms, he has crazy amounts of power - on paper.
A Trump-like actor in Canada (maybe UK as well) could do way more damage.
I think that the quality of the judiciary is subjective but real, it can be characterized.
I don't have a problem with this law as it is written, to the extent it's used judiciously, which I generally expect in Canada - but that's only because of an understanding of the system as a whole, not as it is written.
A Trump-like actor in Canada would do far less damage than in USA. There is no position they could held that would give them the power to do lot of damage. The Queen (nowaday King) has no power. If they tried to use it's constitutional powers as written they would be laughed out. The Governor General, who may act on behalf of the Queen would be laughed out too if they tried to take any decision. The Prime Minister seems all powerful but they are one motion from the House of Common from being overthrown. When one's become POTUS, they are basically POTUS until the end of their term. The exception is impeachment which is a very complicated process that never worked. In Canada, the House of Common can simply vote the Prime Minister out. The Prime Minister is very powerful, I agree, but only as long as they behave.
If the PM holds enough popular support and has even a narrow majority that he can effectively whip, he's almost above reproach.
Everything at the top in Canada is 'convention' even the Constitution and there's barely any real constraint at someone driving a truck through all of it.
Yes, a PM with a whipped majority is tremendously powerful, but getting that whipped majority is not an easy task and requires significant politicking and negotiating within the party precisely because individual MPs are proportionately more powerful than legislators in the US.
The US executive is very different because it's an independent election: it's almost impossible to get rid of a President, and relatively easy to deflect blame.
Australia's round of axing prime ministers had some essential logic to it despite the move being relatively unpopular with the electorate: it wasn't about whether the party would lose power, it was about whether replacing the prime minister would let them retain seats they faced otherwise losing.
It's a mammoth difference when the election for executive power and legislative power are linked and it shows.