Paradisians are too technologically backwards as compared to the rest of the world.
they have hizuru there to help them develop they also have an energy source with iceburst stones.
You can't really just say they will catch up when the rest of the world likely have researchers and technologies stored in their basement.
Even with their military equipment destroyed, the possibility of redevelopment or them secretly doing it is still up there.
the world can try to rebuild their militaries and they will just be destroyed again, paradis is in a postion of power here.
You can take away the tool but you can't take away the skill and in this case, the hatred too.
the hatred can go away with time as shown with multiple characters. and even if doesn't it is in the other nations self interest to try and coexist with paradis.
By politics I'm referring to politics inside paradise. It is not unlikely that Historia will become a political tool or that someone else or something else would disrupt or corrupt the plan.
yes the plan has risks and will require a lot of work to succeed and that's why these arguments for the rumbling boil down to it being quicker and easier. essentially, an appeal to laziness.
the rumbling isn't neccesary but due to eren’s personality he wants to end this now. he is the only one with the childlike enough mindset to carry through with this, we have got two chapters focused on his POV, and both of which emphasise him reverting to childhood in some way when achieving his goal. it speaks for itself.
i’m curious, do you just think every character in the alliance except eren is an idiot? like he is the only person blessed with intelligence to realise genocide is necessary, and they just can’t comprehend it? because that’s sort of what you’re implying here.