If anyone is curious about the science behind this and why you should add the fat/oil to the pan when the pan is hot, rather than when it's cold, it is primarily around creating conditions for the https://en.wikipedia.org/wiki/Leidenfrost_effect
If you do this correctly, even eggs can be prevented from sticking on stainless steel pans. The extra advantage for stainless steel is it can be cleaned back to like-new condition relatively easily and without significant concerns over /how/ you clean it. You can even use acids to clean stainless steel to polish it to a shine like vinegar or lemon juice, without damaging the metal in any significant way.
If you do this correctly, even eggs can be prevented from sticking on stainless steel pans. The extra advantage for stainless steel is it can be cleaned back to like-new condition relatively easily and without significant concerns over /how/ you clean it. You can even use acids to clean stainless steel to polish it to a shine like vinegar or lemon juice, without damaging the metal in any significant way.