Savage,
I don't have any hard scientific knowledge about these things, and I'm not a chemist, but I've been cleaning my guns as stated for 45 years (almost) everytime I shot them, and I haven't wrecked anything yet. From a longitudinal perspective, thats a better track record than the carbon fiber, ball bearing people. I'm not looking for arguments here but I think there are alot of "myths" associated with gun cleaning.
Yes, I use a "Routine" when I break in a new barrel. Really rough barrels somitimes get the "Tubbs" abrasive products. Sometimes I use Montana bore paste on stubborn barrels. No, I've never made a barrel shoot worse.
I don't know about carbon as an abrasive, (and you may) but I recall reading a piece by David Tubbs where he stated he shoots moly bullets "until the accuracy begins to drop off" usually around 650 shots, without cleaning. Is there a hidden message here?
Raise your hand if you ever wrecked a barrel by shooting non-corrosive ammo and cleaning with an aluminum rod. Slowly, so that the earth doesn't fling itself out of orbit....