Canada

The point was to secure stuff going south. Who cares now?

He's a milquetoast centrist, so other centrists like him, idiotic right-wingers rave about him being a communist, and left-wingers wish it were true

I always assumed hate against him was like Canadian Fox News stuff.

It mostly is, yes. The Conservative Party leader is very much a Maple Maga fanboy, and (like all Conservatives before him) he appeals to the Prairie provinces; the oil workers, farmers, truckers, etc... Your basic Fox news crowd. His father was also very disliked by the same crowd, and so his last name itself triggers them like you wouldn't believe. (Think "Canadian Clintons")

But a large part of it (I initially thought), was also typical Canadian political trends. We tend to put the Liberals in power and then keep re-electing them long enough for them to inevitably become the villain (usually about a decade), and then over-correct and do the same thing with the Conservatives. Like clockwork, and it was coming up to about that time.

Now, though, with Trudeau stepping down, and the promise of a new leader...combined with the general hatred of Pierre Poppinfresh, the Liberals fortunes have turned around 180 degrees. So it's going to be an interesting federal election rather than the landslide that the Maple Maga fuckwits were expecting.

I was hopeful when he got elected, and he fulfilled some promises, but he failed to move forward with proportional representation election overhaul, IMO a major flaw that could've been what he was known for in the future. He's also had scandals like any other PM. The Me to We charity scandal (where a charity was awarded a large govt contract. The charity had previously paid Trudeau and family to appear at its events) was ultimately cleared by the ethics commissioner. His SNC lavalin scandal where he attempted to directly influence our justice minister to intervene on an ongoing criminal case, then removed her from her position when she refused. SNC lavalin was also found to have made illegal party donations, which the liberals didn't reveal when the initially found them.

He was also the first PM in history to have been found to break the federal ethics rules by accepting a private vacation for his family from Aga Khan, breaking the conflict of interest rules.

He's always paraded himself as very progressive, but images circulated of him wearing brown face when he was slightly younger (but definitely old enough to know better).

Finally, a ton of people who were anti-mask were fed rhetoric that it was Trudeau's fault for the masking requirements, despite the fact that it was almost entirely Provincial restrictions. They also tried to cry overreach when Ford failed to remove the Ottawa encampment, and Trudeau enacted the emergency act to clear them, though again, reviews after the fact cleared him and agreed it was an acceptable use of the powers.

Overall, an enormous step up from Harper says of no transparency, but he didn't quite live up to what many had hoped, and they're angry at the current situation, and blaming him is an easy scapegoat.

I dislike him because he's a neoliberal and especially his broken promise to get rid of FPTP voting.

He’s been in office for nearly a decade. Canadians are tired of him. Realistically, he hasn’t done anything worse than any other politician — you make promises, some you deliver on, some you don’t. Eventually, the “don’t”s pile up, and folks get tired

Honestly, people are just tired of him because he's been in office so long and has failed to deliver on some old promises.