Two incidents that you can think of is "far to (sic) much?"
No mechanical safety feature will ever replace training and experience in proper firearms handling. The most basic safety training for semi-automatic arms is to know how to clear the action and know for certain that no round is chambered. More basic than that, for all arms, is to never point it at anything you don't intend to destroy much less point it and pull the trigger.
I never said that I only know of 2 incidents. You know there are plenty of cases where someone said that the gun was unloaded and they shot someone.