Yea, I think OP is wearing rose-colored glasses. I'm 50 and I don't remember any time in my life when anything bigger than sparklers or tiny firecrackers were legal. To my young eyes, they've always been illegal. The differences now are 1. a more belligerent and careless population and 2. plummeting police enforcement. You can read a lot of comments here from places (mostly CA) where people care to do the right thing and enforcement is actually happening, and lo and behold it's at least helping. Fireworks bans are not any more "culturally unenforceable" than masking during COVID was.

It helps when your local culture is respectful, cooperative, and intelligent enough to understand why we don't light fires when every tree and blade of grass within 200 miles is dry as a bone. It hurts when your local culture is "Fuck everyone else, I'm going to do what I want!"