Wiped Cam Lobe Theory - Imput Wanted:

Not to blow the research but I've personally built about 30 flat tappet engines since the bearings lost the squirt hole. Some used stock rods but the oil holes had "no soruce". I've never lost a cam that wasn't due to my own inexperience. The last one was '87 when I lost a roller cam because I didn't use anything to anchor the dog bones...lol.

While "any" oil flinging off the rotating assembly will probably have some chance of hitting a cam lobe, I am positive this is not "the cause" for the vast majority of cam related failures.