In this case, illegal fireworks can be highly dangerous. And they also are usually set off by people late at night, waking up dogs and babies and everyone else. It’s highly selfish anti social behavior. And every year lots of people get injured or lose homes or worse because of illegal fireworks - like this event a couple days ago.
https://www.fox13seattle.com/news/homeless-whidbey-island-fi...
Edit: another comment brought up wildfires started by fireworks too. All great reasons to pay for “snitching”.
With the dryness and the fires I can certainly understand the ban... but let's not pretend it's because of safety for people.