I have no doubt there is validity to OPs claim. Granted, I think you'd have to over aggressive to achieve that. But possible.
Not likely for most discover the hard way. I only say that because people I shoot with rarely clean their ARs
That being said, I use the Otis BONE tool. Its seems okay to me. I never need to use it more than a few twists though.
View attachment 262495
Normally I use the side of a screwdriver to pop the big chunks off. Wipe it, then twist the tool a couple times and done. Ill play guinea pig for the sake of INGO. If I manage to screw up my rifle doing that guess ill let y'all know
I use one of these as well as the following. No issues thus far, but I don't grind it into oblivion either.
Star Chamber Cleaning Tool
At Otis Technology we innovate gun care; from the original Breech-to-Muzzle® breakthrough to world-class manufacturing facilities. We work endlessly to be trailblazers. Whatever we make, we make it better, faster and most importantly, smarter. Otis is Smart Gun Care.
otistec.com