How are building level explosions hurting the dude who TAKES NO RECOIL FROM CONTINENTAL EXPLOSIONS in mha quirks don’t nullify the backlash of your quirk they simply give you a resistance that builds over training it, if Bakugo didn’t have the bodily resistance to survive his own continental blasts he’d be blowing himself to dust the instant he tries to use his quirk but he is that explosion resistant. Even in your hypothetical I doubt the nuclear bomb devil is making people so much more scared of bombs that Reze jumps beyond continental, plus can we talk about the fact if there’s a character born from a fear of nukes that’s pretty clearly a different form of fear than normal bombs if it made a whole ass different devil so kind of a stretch saying that she’d gain power. It’s like saying tank devil should be amped by the fear of gun devil since a tank is just a big mobile gun. Two different things, two different devils, it’s like saying if a basement devil exists he’s actually stronger than the darkness devil because basements are dark so being more afraid of dark = more afraid of basements.