How often do you remove the pinned barrel of your gun?Steel on steel and steel on wood sliding over each other - Wear will occur. I call BS on that one.
Without a layer of lubricant between them (think motor oil in engines, grease in wheel bearings, and so on) Even WITH lubricant - the parts still wear - just at a slower rate.
Yes - wear will occur - I have several older guns with pinned barrels - 2 of which required a pin size increase and a re-drill to tighten them back up.
See this post, guy says after 50 barrel removals he's never had an issue or loosening. I'm into computers and everyone says that the new Solid State Drives for storage have a limited "read/write" function and that you should be careful because you can damage your drive by using it too much, I've never heard of one actually failing, its just a theoretical limit.
It seems like the same exact unfounded fear. Theoretically it could loosen the pins, but the reality is unless the pins are sharp and not rounded, or you are using an oversized punch, you'll never actually have an issue within the use life of your rifle.
Not trying to discredit your personal experience. I think it just seems like a non issue compared to the ease of cleaning the barrel and preserving the wood around the barrel/lock where water usually seeps when cleaning.