Hey now...their preference for a clean looking gun (hopefully without removing metal) has no effect on anyone else
I don't know what's in those Birchwood Casey lead removing and polishing cloths, but they are definitely abrasive. I use them to polish away scratches and niks on my stainless revolvers. I don't know if it is enough to remove any material from the cylinder face, but the way I see it the carbon buildup on the cylinder face makes for a very slightly smaller cylinder gap and the way it looks doesn't bother me anyway.