I'm assuming that if they wiped anything, it was the negative specifics of their cult stuff: the Moloch rituals, the truth behind the "Spirit Cooking", the hired guns, etc. They might have initially thought about wiping him completely, but they could have thought that it would take too much time and resources to wipe out that much memory and then rebuild it, so they focused on the things that could have made Kanye into a valuable state witness (like Reagan was during the McCarthy era).
[–] unrealisthenewreal ago
Kanye has two kids now aka collateral. If he doesn't play "their game" I'm sure they get threatened.