I reload tons of LC brass and it will take many reloads. Like 10-12. Very good brass. I reload it until the primer pockets get loose or a neck cracks. I only bump the shoulder .004 so usually the primer pocket get loose first.
I have not seen any with the crimp like what's on the left. Maybe that's what that guy was talking about? If they all looked like the one on the right I'd say the guy was full of sh*t.