From the article: "National carbon prices would have to rise to $150 a tonne if Canada is going to meet its 2030 GHG targets"
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I can't say that I'm the least bit surprised, and I would argue that it is MUCH worse in areas, like Ontario, where the carbon tax has been intention obfuscated.

For a tax to be effective in changing behaviours it usually needs to be fairly straight-forward and obvious.  People need to be able to see how much they are being taxed due to a specific behaviour and how that value can be reduced by changing behaviours.

With Ontario's "Cap and Trade" carbon tax, those who really dig into it can find out that it is costing them 4.3 cents per litre of gasoline and 3.3 cents per m^3 of natural gas, but they have to dig for that info and it gets even harder to see for just about anything else for which this tax applies.

That makes it (intentionally) VERY difficult for consumer to see what behaviours are being taxed.