Phil Irving, in some of his papers, writes that bedding a motor is a function of it's bore/stroke (to determine piston speed I assume), and torque output. After bedding a motor successfully, he suggested (in an ideal World) fitting new rings and giving them full power, so there doesn't seem to be any hard and fast generic rules. However, since Irving designed some very iconic bikes, and wrote his acclaimed engineering bible, over 50 years has past and metallurgy has advanced in leaps and bounds, say maybe his advice is no longer as critical.
That 50 years and such is exactly why a lot of the old ways (I call them old wive's tales) don't apply anymore. Much of what was spread around was "shade tree engineering" thinking as opposed to "backed by science and research" data. The one thing that has not changed is the agreement that the absolute worst thing you can do to any engine is to start it up.
And that's where better fluids come into play, like any type 5 synthetic such as Redline and Maxima makes, as they cling to parts better and longer than any other fluids, preventing dry startups. But I'm not a fan of all material science break throughs. There's no reason a BMW boxer engine should take 10,000 miles to quit using oil. I'll take a cast iron liner any day over their fancy schmancy plating.