I won't argue the 125 or 200%. Regardless the number, it is an asset Canada should fight for. Nevertheless, Canadians should reduce their use of fossil fuels. It's not a good idea to drive around in our forests in Hummers and send the pictures to the less fortunate countries so to speak. 
Carbon taxes are as good a way as any to influence behavior. Personally, I can manage my lifestyle to use less carbon. The only way I can pay less income tax is move away, or make less money.