Originally posted by Galan007Imperiex's purpose was recycling and starting anew. He wasn't erasing it, so much as he was collapsing it and transforming it into energy - and then restarting the cycle.
Yes, I know galaxies were *ultimately* destroyed. This so-called 'Hollowing' was not instantly accomplished, however. That is to say: Imperiex certainly did not pop in and gesturely erase whole galaxies via one massive entropy rift-- his Probes were literally sent to individual planets within the galaxy to 'Hollow' them one by one. We saw this when he 'Hollowed' Maxima's galaxy(a task which evidently took roughly 2 months to complete), and again when he tried 'Hollowing' the earth and it's galaxy. Etc.Point: if Imperiex could wave his hand and destroy entire galaxies(or even entire planets) via entropy, then there would be no need for him to send Probes to commence said 'Hollowing'-- there would be no need for Imperiex to engage anyone physically. He could simply release large-scale entropy and save himself a LOT of time/effort... But that wasn't the case.
So it's not so much that he could or could not release entropy and annihilate the Universe, as much as it was the fact that was not his intent.