Craig, fair question. I brought up PRS, CMP, and benchrest because they all represent different cross sections of competitive long range shooters - all of which go through a barrel every year. So my intent in making those comments - which were NOT focused only upon PRS as your cherry picked quote was - was to convey to the OP and other new shooters the reality of long range shooting and resulting barrel life.
Long range shooting, as a sport, is a high volume game. As I said, if a guy actually wants to be good at it, instead of just lobbing bullets out there with a ballistic calculator solution and praying they make contact, then it requires a relatively high round count. It's a very different paradigm than a hunting rifle where grandpa's old pre-64 will last for a dozen generations.
It seems pretty fair to warn a newbie about that, since so many are focused on low cost of entry. You often see folks talk all the time about their cost per shot as a reloader; bullet, primer, powder, proportionate brass life... But they usually neglect to mention the extra Dime or up to Quarter per shot they spend on barrel life ($500 barrel installed cost divided over 2,500 shot accurate life like the 6.5creed is 20cents/shot).