Because it's a big panto! Trump,Kim Song,Johnson, it's a joke. Just laugh, none of them have a switch.
You'll understand if you read the forty nights in the desert with satan. satan was more confused then he was before he met Jesus.
The devil is hatred and the anti-christ is a double negative like non-violence and invincibility. They can create safety themselves and recieve nirvana ever after in hell. However, they rebelled against the angel ALL MIGHTY, with nihilistic invincibility and over ran mankind causing their suffering. All I know is Jesus wants no part in war (good & evil) and will allow all of hell to end to passive equanimity.