I think a big point is that putting a slightly hotter cam with stiffer valve springs increases cam wear given the flat tappet (non-roller) lifter set up. This
I remember reading about the zinc additive being required during breakin and recommended after breakin but I didn’t know why this was a thing for a stroker.
I thought some 4.6/4.7 builds included roller-style cams, but I don’t know what the cons might be for doing so. I had it in my head that I wouldn’t want a cam requiring stiffer springs if I did a stroker (but I’m also not sure if that thinking is logical or if it would undermine paying the extra coin for a stroker). I also don’t know if getting a nitrided cam helps alleviate wear concerns as well as doing the zinc additive.