I would only say that competent bodies, such as Navius Research in British Columbia and others, have studied that exhaustively with their expertise and found that to be not true. The “Biofuels in Canada 2020” report, which you can find on their website, lays out, by province, the cost of using biofuels and renewable fuel regulations.
In the case of ethanol in gasoline, it creates a negative net cost for Canadians because of the octane value. For renewable diesel-type fuels, there is a slight cost for a typical long-haul trucker.