Thats because canola oil is objectively terrible for your health and will make you die young. Jury is out on avacado oil but for cooking, its tallow, butter and cocount oil if you want to avoid burnout and premature aging.
https://www.heart.org/en/healthy-living/healthy-eating/eat-s...
Besides that, I'm wary of the saturated fats claim being true given that most of the studies were done on middle aged white men on a standard american diet. it didn't account for excessive calories and high levels of sugar in the diet. We've been eating animal products for thousands of years (inuits eating it exclusively) with little to no issues. Why would these suddenly now be a problem?