Again, you seem to assume that all policy comes from Trudeau and that it would completely change if he left. For example, I don't think you understand how deep support for carbon pricing run in the LPC.
The argument on carbon pricing has been lost. In no small part due to LPC incompetence. All the things they are doing now, like sending rebates quarterly and forcing banks to properly rebate it should have been done earlier. Heck, they should have had monthly rebates after $50/t. And they most definitely shouldn't have given an exemption to some fuels and then openly admitted it was about electioneering.
More broadly it's hard to make climate policy a real focus and not have it get blamed when they pursued several other inflationary policies at the same time.
Lastly, in hindsight, perhaps the only way to actual implement a carbon price system that won't be repealed is to do what Stephane Dion proposed with the Green Shift and replaces other taxes with a carbon tax. His mistake was pledging to reduce income tax and increase family benefits.
Liberal Leader Stephane Dion revealed his party's carbon tax plan Thursday, saying Canada needs to make a "green shift" to help save the environment.
www.ctvnews.ca
I would argue they should replace one consumption tax (GST/HST) with another (carbon tax). Once that is done any government that wants to scrap it will have to reimpose GST/HST something that will be highly unpopular. Something the Liberals suck at is making the Machiavellian moves that preserve their policy long term. Not much of what the Trudeau Liberals have done will survive.