We should welcome more precise law enforcement. Imperfect enforcement is too easy for law enforcement officers to turn into selective enforcement. By choosing who to go after, law enforcement gets the unearned power to change the law however they want, enforcing unwritten rules of their choosing. Having law enforcement make the laws is bad.
The big caveat, though, is that when enforcement becomes more accurate, the rules and penalties need to change. As you point out, a rigidly enforced law is very different from one that is less rigorously enforced. You are right that there is very little recognition of this. The law is difficult to change by design, but it may soon have to change faster than it has in the past, and it's not clear how or if that can happen. Historically, it seems like the only way rapid governmental change happens is by violent revolution, and I would rather not live in a time of violent revolution...
The big caveat, though, is that when enforcement becomes more accurate, the rules and penalties need to change. As you point out, a rigidly enforced law is very different from one that is less rigorously enforced. You are right that there is very little recognition of this. The law is difficult to change by design, but it may soon have to change faster than it has in the past, and it's not clear how or if that can happen. Historically, it seems like the only way rapid governmental change happens is by violent revolution, and I would rather not live in a time of violent revolution...