Well, it's the most important issue to voters, so he can either do that, or lose the election.

https://globalnews.ca/news/6006868/climate-change-federal-election-issue-poll/

Here's something too many people seem to refuse to understand: You have to pick your battles. Is withdrawing from the Paris accords really the absolute top priority for you?

You'd rather the CPC die on that hill and hand another term to Trudeau than to compromise on that issue (since that's what the electorate wants) and then be able to dleiver you all of this?

• Build pipelines.
• End the importation of oil from outside of North America.
• Cut taxes.
• Balance the budget
• End corporate welfare.
• Impose mandatory minimum sentences for serious crimes.
• Reform the Not Criminally Responsible Designation.
• Tackle Rural Crime.
• Kill the carbon tax.
• Fix equalization and stop the federal screwing of Alberta.
• Close the loophole in the safe 3rd country agreement that enables illegal border crossers to claim asylum in Canada.
• Permanently close illegal border crossing points such as Roxham Road.
• Crack down on illegal blockades.
• Stand against China.
• Stand against Iran.
• Go after the UN by seeking reform to disempower dictators, stop forking money over to shitty programs and shitty countries.
• Strengthen our relationship with post-Brexit UK and other traditional Commonwealth countries.
• Increase defence spending.
• Streamline procurement by making it the sole responsibility of one minister.
• Replace the CF-18s.
• Assert military dominance in the north.
• Veterans reforms.
• Oppose firearms regulations that do not advance public safety and instead penalize law abiding firearms owners. This includes the arbitrary reclassification of firearms and magazines.
• Get clean drinking water to native reserves.
• Throw cold water on the housing market to address skyrocketing prices.
• Rollback and end funding to CBC Digital by the end of the first mandate;
• Cut funding for CBC English TV and News Network by 50% with the goal of privatizing them within the first mandate
• Pass a law to prohibit government thought policing, such as Trudeau's summer jobs abortion attestation.

I'm honestly asking: What would you prefer, another for years of Trudeau (including Paris compliance), or a Conservative government doing all of the above, but also doing Paris compliance.

You're getting Pairs compliance no matter what because no party that stands against climate hysteria will win the next election. So you might as well be an adult about it and put that one in the "Can't win 'em all" column for the sake of getting what the change that is feasible. You live in a democracy, which means you have to compromise on some issues to get what you want on others. That's literally the whole point of democracy - you're negotiating a trade with the other side.