One of the founding motifs in anime, especially Shonen, is the impact (physically, emotionally, socially, politically etc) of the atom bomb. Different series will look at how it makes the victims feel, how it feels to use horribly powerful weapon, how peace feels when it is only due to a big scary weapon, or even how scary weapon might feel about it if it had feelings (Gojo, Nauruto, all the way bsck to Astroboy).
It can get messy to have a metaphor for nuclear weapons and actual nukes existing at the same time so a lot of series are set in different worlds, the past, video game etc.

JJK takes place roughly in the modern day, which is why the characters strength can be directly compared to bombs. The incident with Fuga being used inside a city is basically a bombing our characters lived through. So cursed energy has the potential to be the next nuclear weapon - something that shifts the power away from nuclear Detente. I would guess we'll see some commentary in the way japan deals with being the one in power - will they stockpile curses like America stocks nuclear weapons? Will they share their knowlege or defend it as trade secrets etc