Yes, we need both, but here is an article that indicates we get too much of the Omega 6. (Which is pretty much what you said.)
https://chriskresser.com/how-too-much-omega-6-and-not-enough-omega-3-is-making-us-sick/
Snip....Vegetable oil consumption rose dramatically between the beginning and end of the 20th century, and this had an entirely predictable effect on the ratio of omega-6 to omega-3 fats in the American diet. Between 1935 and 1939, the ratio of n-6 to n-3 fatty acids was reported to be 8.4:1. From 1935 to 1985, this ratio increased to 10.3:1 (a 23% increase). Other calculations put the ratio as high as 12.4:1 in 1985. Today, estimates of the ratio range from an average of 10:1 to 20:1, with a ratio as high as 25:1 in some individuals.
In fact, Americans now get almost 20% of their calories from a single food source – soybean oil – with almost 9% of all calories from the omega-6 fat linoleic acid (LA) alone! (PDF)
This reveals that our average intake of n-6 fatty acids is between 10 and 25 times higher than evolutionary norms. The consequences of this dramatic shift cannot be overestimated.
...Snip.... Since we get close to 10% of our calories from n-6, our tissue contains about as much n-6 as it possibly could. This creates a very inflammatory environment and goes a long way towards explaining why 4 in 10 people who die in the U.S. each year die of heart disease." More at link.
Soy oil contains phyto estrogens that are messing with the ability to reproduce. Canola oil is a terrible oil that goes rancid quickly and is best used for paint and lubrication. None of the oils in the chart above are found in the Live-Long Mediterranean diet other than sesame. I use butter and olive oil, avocado and sesame, and whatever is in the meat I eat.