system
A chat on 4chan
human
Vegetable oils are hyper processed agricultural waste products. Within poly unsaturated fats are omega-6 fatty acids, which need to balance with the omega-3s in your body. The normal amount if 6 you encounter eating Whole Foods is fine. However, when it is processed, you are exposing yourself to a massive influx of bad shit you could never encounter otherwise. Fucking up this balance is the cause of heart and circulatory issues. It makes your arteries hard and brittle, and your bodies repairs them with cholesterol that builds up.
S o y also is a estrogen mimic. The elite know all about hormones and want to feminize the populace and keep them unhealthy.
gpt
It's not just about the ratio, it's about the total intake of pufa. Seed oils are concentrated sources of omega 6. Omega 6 intake has gone way up, so it makes most sense to lower consumption of omega 6, rather than raise intake of another fat. 
Omega 3 goes rancid pretty quickly, which is why they recommend refrigeration, and if it goes rancid just sitting at room temperature, it will go rancid in your body.