Animal fat is not equal to trans fat. Two different things.
As far as government involvement goes, if you didn't have any government involvement in commercial activities you'd have a very messed up situation. How would you like to fly ungoverned skies? Drive roads with no cops? Some regulation is necessary, folks.
Well what BoberFett was saying is not so much that animal fat equals trans fat, but rather, the anti-fat craze a few decades ago led to the need for trans-fat. Margarine and other products like it didn't come into existence until fat became the enemy, so trans fat was necessary to create a stable product and it didn't quite report the same as saturated fat.
That and the convenience craze, which offered more spreadable products.
Which is also why we still have so many "low fat!" products that are simply replacing those fats with fillers, starches and other carbohydrates to hold the product together. I hate that Low Fat is still a thing, because I'm trying to have the opposite, more fat and less sugar. But almost everything Low Fat is chock full of sugar.
It's kind of funny. Our anti-fat scare actually made us fatter, because carbs are far worse and also creates a rebound effect which increases a desire to eat more.