Just to be clear, I was just saying that the point was ignored, not that I agree.
Although your response isn’t good either, you can advocate for more efficiency so people get to do more rewarding work, such as arts and crafts. Part of these arts and crafts can also be fireworks.
I don’t think the work that’s done to create and use fireworks is without purpose, in the end it’s a celebration and that’s purpose in and of itself.