Nonsense. Margarine/ palm oil have been insanely faulted as it has no other substitute thst can match. it. Other oil and fats producers losing market share as there is no viable substitute.
Margarine is not palm oil but can use palm oil and other vegetable oil to make it. Go and google it on how margarine is made. In the health aspect, margarine can be considered as trans fat. The reason street seller like this using margarine is because of its very extended shelf life, which means profit. long shelf life and cheap selling. If they use organic butter, one burger will be like $10.
Just because many use margarine and sell it to you, packet it nicely and you dun really die immediately after consuming it, it does not mean it is good for you. Look at the science on how it is made.
Now you know why many get jabbed and waiting to die, because many people take it and it seems safe and comforting and no immediate death mah.