If Luke chose at that moment to kill the upper echelon of the Fraternity, and even everybody in the factory, that would shock the smaller branches of the organizations.
Without Sloan and the other senior executives, these branches would most likely disappear before ultimately reappearing again elsewhere.
If Luke wanted to clean up the branches later, he would have to waste more time searching for them, which would be too inefficient.
So, he couldn't kill Sloan and the others for now.
Thinking that, Luke snuck out.
After making a few turns in the dark hallway, he arrived at a large, brightly lit room.
He didn't go in, but looked through the window and took in everything in the spacious room at a glance.
An enormous but old loom, which looked like an ancient cultural relic, was at work.
After watching for a moment, Luke left.
He was very interested in it, but could only leave it until last.
