I can tell you one thing for sure. I have worked on more S&W revolvers than most people will see in a lifetime, "no brag, just fact" as Will Sonnet used to say. The locks are an idiot's solution to the wrong problem, but that's another story. In today's world, if you modify the gun's lock, and it is ever used in an accidental shooting, which admittedly, is unlikely statistically, but possible, you would be in deep do-do. I would never alter or remove it. My revolvers were mostly for target use, so a lock jamming wasn't a life threatening experience. On the S&W guns I use for protection, there is no lock, period. I'd buy a used gun without the lock, case closed, no problems. There are plenty of used guns to go around, revolver or semi auto, to not need to use one with a lock.
Don't alter it, don't buy one with it, and if you do trade it for one without it, if you feel it's a problem.
Having said all that, they are pretty well designed, and unlikely to fail. The more pressing problem is locking the darn thing and then needing to use it, that's the stupidity of the self protection aspect of it. If you make something safe for the average idiot, there will always be an above average idiot.