What did you stab, a cabbage? Some old salts say, never trust a lockblade. I would not push my luck stabbing with that knife unless I absolutely had to, like to prolonging my life in a bear attack.
It's great that you took the knife apart; not many people do that.
About the hole, I'm not sure it's the weakest part of the knife. Since the Force version has a swedge, the tip is probably the weakest part. The pivot or the lock are probably weaker than the blade at the hole. BTW, the hole is for opening like a Spyder hole, and can also be used as an oxygen wrench.