You're missing the point, imo.  There was never a reason nor any benefit to having seed oils in our foods. Literally none. Of course you can consume them in limited amounts without great harm. This is generally true of like 959% of things that are toxic or bad for you. They only do significant harm in large amounts. But you can also eat almost all of the same foods withOUT putting canola oil in them. You can cook your food in lard and butter instead of seed oils. You can gear your diet toward healthy fats. This is what we did for basically always until very recently.

If the grocery store has something bad in like 90% of their products, then all you have to do is support and purchase the products that don't put this in the food. Viola. And it helps to solve a stupid problem that never needed to exist in the first place.

Of course you can just stop eating as much of something toxic and it'll do less harm, but it is not good for you regardless, and there's zero reason for it to be in our food. It isn't food, it's bad for us, and we should stop using it. The point of telling people is so they know. That happens to be a prerequisite to solving ANY problem.

For the record, it isn't that hard to avoid them either. You just have to be careful about picking stuff up off the shelf and you have to be cognizant of what you are putting in your body. You can also easily just ask just about any restaurant out there to "please can you cook my steak or food in butter instead of vegetable oil?" And like 90% will just say "sure." I do this everywhere I go. 

It's not that hard, but no its not going to come without any effort at all or in total blissful ignorance on the part of the consumer.