How did you get overtime from what I said?
The Reality Gauntlet and it's abilities/power, they are consistently displayed as happening in a flash or wave of a hand so why would it be overtime. Also it literally said "eradicate ghosts forever" and we know they wanted to destroy the Ghost Zone which is the only way to do that because so long as the Ghost Zone exists, ghosts will continue to appear and they are spread out across an infinite dimension so how could it
eradicate ghosts forever if it's going to leave the dimension which is made entirely out of ectoplasm, has sentient structures and can cause the creation of ghosts. Eradicating just the inhabitants doesn't stop ghosts forever as more would just show up there eventually.