Between "trashing things" and walking around days in days out with "a complete toolbox", there is something called "skills" or "understanding (what you can and cannot do)". My grandpa used his small pocket folder for cutting, stabbing, piercing, scraping, drilling, reaming and it was always in mint condition. Not a high end item, mind you, but he had a lot of understanding. Get me right, I'm not telling you to do weird things with your knife. I'm just saying the problem is not in the knife, it's in you. If there is a problem at all...
And it probably didn't even have a lock.
Back in the 80's when more people in my area had a knife (German slipjoint off course) that kind of use (what I mentioned before is abuse) was completely normal.