Luciel knew that most of the members already think that they're doing their best and were prepared that they'll have to die if something happens.
But because Treyton and the others were present, those with lesser strength actually developed such subconscious reliance.
They might not have noticed such a reliance at all and it isn't that bad considering that all of them were still working hard to continue honing their strength, but such reliance would just hinder their growth especially when they wanted to grow as fast as they could, so Luciel directly pointed out that they couldn't have Treyton and the others act as their safety net when they have to face mutant animals for their training.
After he said such, Nathan and the others stopped talking as they were obviously thinking about what he said.
After a while Nathan said, "Yeah, it seems that we really need to do it on our own even without the presence of Treyton and the others."
