True, but remember that the "match grade barrels" are almost certainly stainless steel, which on a competition rifle probably won't go more that 4-5000 rounds before it starts getting sloppy.
Bore paste is an abrasive, but I believe it's a clay-based abrasive that shouldn't wear out the barrel any significant amount.
FWIW, I just started using Butch's Bore Shine and it seems to do a real good job of getting the copper out of my AR barrel, which I "broke in" with the Tubbs Final Finish fire-lapping system.