Some people have manners, and some do not.
Exactly! That's why I have frequently reminded some individuals here that dishonesty is not civility. Fake manners is precisely that... fake. I'd rather take the chance that my comment about poor restoration or insane pricing might be somewhat offensive, than to perpetuate such behaviors and see more guns ruined by fools and frauds.
On a related note, you should have seen some of the looks I got at gunshows when ammo prices skyrocketed a few years back. Guys were crowding around ammo vendors clamoring to pay $50-60 for a brick of .22LR or nearly a buck a round for 5.56m/m ammo to feed their AR's. And I would casually stroll by and loudly ask my buddy, "How many of these guys were stupid enough to vote for Obama?" The cold glares from the guilty were priceless.