It can be but I don't think I've ever seen it. The vegetable oils I typically see in my supermarket are soybean oil these days.

or cottonseed oil (with "non food grade pesticides" then post processed to become "vegetable oil"

Nearly every instance I know of "vegetable oil" means soybean oil.

palm oil is just too damn cheap... and ferrero got to the game early and probably funded the whole RSPO and convinced the world big tabbaco style that maybe THESE palm oil aren't so bad after all.

or soy, or whatever is cheap in that region or the time of year etc.

The point is it will be highly processed whatever it was.