Jiang Lu's subtext was already clear.
Although he did not say anything like "if you don't register, you're an enemy of Hell" in such a hardline manner, everyone here knows what it means to be under surveillance.
It's like an invisible sword hanging over everyone's head, possibly falling at any moment, but you can't see or touch it, nor do you know when it might drop and sever your head.
The Netherworld and Sumeru Mountain have made their stance clear, so they remain friends of Hell, but those who do not will be regarded as enemies.
It seems a bit binary. Not taking a stance doesn't mean siding with Sumer, but unfortunately, although that makes sense, Jiang Lu isn't planning to reason with them.
So-called weak countries have no diplomacy; similarly, weak worlds have no standing to reason with the Super World.
