Not exactly. The knife's lock wear isn't considered warranty because the lockbar is a wear item on backlocks. I'm actually wondering if the rate of wear has a lot to do with the really hard K390 on that knife. Either way, it was deemed "normal wear" but they should have offered to repair it, IMO.
Spyderco isn't a bunch of dummies and I find it likely that they share parts among various knife models, and a lockbar should be an easy one. Standardization, manufacture engineering 101. Reduces inventory, unique dies/stamps, and reduces cost overall. They have a few police 4, sized models, but the lockbar doesn't even need to be unique to the police. I could see using some type of similar "blank" that is then made for each unique model.