Whether they were big shots or insignificant lone cultivators, everyone felt the impact of the destruction of a Major realm, and felt some form of apprehension. A Major realm was deeply connected to the laws of the universe, and was the most stable, energy dense entity in the universe itself.
Not even Eclipse, and not even Dao Lords had access to as much energy as a Major realm, nor could they influence the laws of the universe on the same scale. Maybe if those eight beings above the Dao Lord realm weren't constrained by the fact that the universe didn't allow them to use their full power, they might have come close. Heck, they may even be equal to it, or even surpass it.
But they did not live in a 'what if' situation, they lived in reality, and in reality, even those eight beings could not control such power.
