It’s most likely an addiction to rich foods and nobody around to put his fork down for him.
That may be one of the reasons for the purges, because a few tried to put his fork down.
The Nork generals gave up trying to teach restraint to the little riceball.
They’re now going to let him stuff his face until he croaks.
The DPRK elite want to be feared, & that’s impossible as long as the world is laughing at their Dear Leader.