He's not great, but I'm disagreeing with the false equivlance here. Trudeau is better compared to Harper who gagged scientists, compared to Scheer who wants to rely on subsidies and regulations to limit carbon, compared to Doug Ford and his ideaological opposition to carbon tax. So yes, Liberals are better then the Conservatives on the issue of the oil industry and reducing carbon emissions.
ETA: In an ideal world I'd prefer NDP or Green, but as long as we're limited by first past the post, the best way to support climate change mitigation is by avoiding Conservatives via the Liberals.
I'm sorry but there is no doubt that "both sides are at fault".
"Trudeau has never really stood in the way of Canada’s oil industry, despite years of platitudes about addressing climate change."
https://oilprice.com/Energy/Energy-General/Trudeau-Declares-...