Apologies, but you're not making any sense to me in relation to this thread.
A question was raised by OP, I answered it in earnest and you've seemingly taken issue.
The reality is (and truly I mean no offense)... if I had a 3.5" to 4" folding knife and you didn't... were you to attack me, I'm positive I could make you piss blood all over the concrete.
Some defense is better than no defense at all. As I previously stated, I don't have many concerns over lock strength in an edc setting - my only concern with lock strength is in self defense use.
I don't carry a gun with me at all times (I do in my car) but I do carry a pocket knife with me at all times. I spend 60% of my work time in New Orleans.. and on more than one occasion I've seen groups of 3-4 people beat the hell out of 1 person and it's happened in a heart beat, without apparent reason.
Is it ideal? No. But knowing I have a strong folder with a blade big enough to open an artery comforts me. Doesn't just apply to humans either.. jog around the neighborhood an encounter an off leash pit bull while you have a folding knife clipped to your pocket and see if you don't think about that knife
For the record, I do very much hope you are correct about the odds.