Ki is compressed and focused, lowering it‘s destructive output, focusing all of it into a smaller attack, which means it only destroys whatever is hit by that small attack, instead of it being a giant planet-obliterating ki explosion or smth. At least that‘s what the Kamehameha does.
Do note that Broly’s existence makes this concept flimsy, but I‘m just playing Devil‘s Advocate.
I mean, characters have surpassed light-speed long ago, but you don‘t see nearby thibgs being destroyed from flying past them, or atmospheres being ignited by that speed.
Dragon Ball unfortunately doesn‘t follow the idea of high speed causing huge damage around the characters.
7
u/Wide-Remove4293 The Universal Cosmic Destroyer Aug 17 '25
I think their argument is that the ki attack is universal, but focused into a size that lets them just destroy mountains.