This is a good video, I will say though that even in the break-in period (however small it is), we have oil filters for a reason. So even if there is some residual metals left in the oil after the first 1000 miles, those don't make their way back into the engine.
Unfortunately the only real way to test any of this is to compare engine reliability between two identical engines that have undergone the same usage over 100K+ miles, open up the engine and inspect wear on cam lobes, rocker arms / bearings, and cylinder walls.
I'm not going to loose sleep over it. I beat on my truck the second I got it, and didn't change the oil until the 5K interval. Guess we'll see what happens.