I require help with building a mod about explosives and modifying terrain at huge scales

So, Im currently trying to make a nuclear weapons mod that integrates nicely with Mechanism's production chains already and offers a wider variety of weapon sizes than Warium(which only offers like 2 different sizes of nuke). I am running into a bit of problem with this: On Forge for Minecraft version 1.20.1, There doesn't seem to be an easily accessible or convenient method of removing large sections of terrain.

Although I've briefly tried digging into the source code for the mod WorldEdit, I could not find how it managed to do its optomization.

I've also, out of curiosity, tried to see if AI could do a better job looking through documentation and libraries than me(ChatGPT is probably not great, but isa curiosity of mine). Long story short, it was horrible at it and has only caused more confusion. Although I do now have a slightly better understanding of what happens when a block update happens.

So does anyone here with experience making mods know if there is any way to do this on Forge 47.4.x?