Good maintenance is a must . I will point out that at least 2 of TAB's examples are questionable.
1st, firing pins don't "bulge" from hitting brass cases of rim fire ammo, it's softer than the steel, what causes the bulging is dry firing a rim fire which every one is told not to do, in most cases it is specified in the instructions.
So that was a case of user abuse/misuse of the firearm.
2nd, the "race gun", these are nowhere near being stock fire arms that an average person would CCW, and are entirely dependent one the workmanship of one individual doing their own quality control without the sort of checks provided by the factory process. So this can be listed as "monkeying with an otherwise safe gun", again, caused by the owner.
The 3rd case, while it was apparently caused by a factory defect, I would still blame on owner negligence since knowing TAB's age means that this event occurred at least 20 years after the recall he mentioned and a careful owner would have had the proper repairs made at the time of the recall. Of course the age of the gun leaves open the possibility of simple wear, but not enough information is given.
In short, careful examination, and basic safety tests on cleaning would have at least the last 2 of these defects and if they were not present when the last shooting session ended they would not magically appear before the next shooting session began.