100% true. IIRC the ones I got with my rockers were Holo-Krome.
I don't understand how guys are breaking these things. As I die maker, I tightened thousands of those 5/16" SHCS's and never broke one. I've snapped a few 1/4" Allen wrenches, but never a screw. The only thing I can figure is, they are bottoming out in some applications. If that's the case, I would consider that user error, not part failure.