It's kind of burying the lede to just remark PP is likened to "Trump light." He has likened himself by exclusively pulling from Trump's playbook, with the divisive rhetoric, outright untruths, dog-whistling, name calling, verb the noun slogans, and quite literally "Canada First" signs he still hangs in his speeches.
In Alberta he's repeatedly espoused support for Danielle Smith's insane policies, her personal hero and inspiration being the real "Trump light," Ron DeSantis. Nevermind they have openly acknowledged (before the craziness) they'd rather work with Poiliviere, and he's been heralded in the MAGA circles as Canada's Trump moment (with a complete absence of the irony).
If he put on 200 lbs and lost all natural skin color, he'd be a slightly more articulate Trump impersonation.
It's not really a party problem specifically - they're more of a symptom. In reality, the FPTP winner-takes-all (with questionable SCOTUS and congression checks and balances), high risk, expensive break down then rebuild then break down then rebuild full pendulum swing incentivizes these mechanisms that result in no one winning, and a generation of setbacks every time you take a step forward.
In fairness, Trump is trying to "fix" this - you just may not agree that an authoritarian corporatocracy with him as Supreme Chancellor of the Galactic Republic is the right solution (and, frankly, most wouldn't).