Why not just ban the usage of fireworks for various festivities such as Diwali or enforce stricter vehicle inspection code during annual registration? I am sure

Why not just ban the usage of fireworks for various festivities such as Diwali or enforce stricter vehicle inspection code during annual registration? I am sure there will be "some" folks jumping through/going-around the enforced laws but it can make a significant difference when a good majority starts following them and such following gradually increases every year. In this way more and more cities start implementing similar routines. Sometimes we get so much caught up in "cool" or "fun" projects that it becomes easy to ignore simple yet basic implementations that lies in front of our eyes all-along :)