It can be said that if the Machinery Factory had not been destroyed, everything would have been fine. Samuelson could stay underground, helping the Nest Core with Magic Enlightenment. Elemental Judgement could stay in Union City, leisurely waiting for Samuelson's research results.
From beginning to end, only those nine wizards who illegally opened the Teleportation Gates would be harmed. They brought this upon themselves for opening the gates illegally.
However, rest assured.
These nine wizards would only be imprisoned by Samuelson, not killed by him.
This has to do with the ranking of wizard criminals in the Ulnas Circle.
Everyone knows that it was Samuelson who imprisoned the nine wizards. If these wizards were to die, the person who would take the blame would be Samuelson. Carrying the responsibility of nine wizard deaths at once would elevate Samuelson from an "Inferior Mage Level" criminal to a "Sin Wizard Level" criminal.