You want to try to keep PUFAs (o3 or o6 doesn't matter) below 4% of your total caloric intake anyway. If you have to supplement, you are probably eating too much of it. Chicken and Pork are higher in PUFA than Beef. I try to balance it out by eating Beef and Chicken/Pork one day and Beef and Fish the next.
There is nothing "wrong" with taking an o3 supplement, but it usually used to offset the inflammation caused by the o6 that everyone eats in a 40:1 ratio per day on the SAD.
People too weak to follow their own dreams will always try to discourage others.