Might be something in that...
Problem is, my perfectionism shows up with cylinder honing too.. Those flexible hones does not correct out of spec tubes, they just follow existing imperfections.
The only really good way to hone a tube for us amateurs, is to lathe turn a brass rod to fit the comp tube and spin it in the tube covered in fine grinding paste and oil.
It works, but is a bit more tedious than using a flexible cylinder hone.