How many lock failures have you experienced? What were you doing when they happened?
0 so far that I wouldn't consider way outside its use case. I have thwacked a couple on a spine just to see but I wouldn't count that. My folders would only see hard use in an emergency.
And there are plenty of anecdotes all over the internet. There are no axis locks just randomly falling on peoples hands because the QA didn't notice the mm of extra steel shaved off that got you a giant gash on your hand. Even on very high end knives these locks fail all the time. We're talking about extremely tight tolerances
I still have my scar from my first knife accident...Stabbing cardboard as a little boy like an idiot with my new sharp SAK. No pain so it wasn't very traumatic but it was bloody and could see bone. Still remember the shame of messing myself up tho. That was easily the worst part.