Fair enough. If you use anti-seize the factory plugs don't rust in place, although the outside can rust if you live in a humid or wet climate. I can see the value of stainless for cosmetic reasons for sure.
I don't know what year your car is, but I originally designed these for Lincoln Mark VIII's, some of which are nearly 19 years old. Most owners don't ever even touch these, or even know that they're there, until they need to open it...
On a 13-19 year-old Mark VIII, the age, combined with the steel to steel threads in a water system makes it very hard, and sometimes impossible to remove. You don't have to use my plug, or like it even. Just realize that for other people, there is a real need for them...
:beer: