There was no point in rushing towards others and stealing their value points right now.
Rather than that, it could be seen as a disadvantage because solving the system mission while surviving the fourth dungeon floor was important.
Right now, they wouldn't be able to escape the barriers of the fourth floor without leaving the dungeon for good.
This would be the case for the next 30 days. As such, it wouldn't be the best to solve the system mission directly, but it would make sense to wait a little bit.
In the end, the best scenario would be that the system mission would be successfully solved while simultaneously completing the fourth dungeon floor's task.
Even if it was unlikely, offending 100 opponents at the same time while drawing them to a closer range in the first few days of the dungeon task was not the best idea.
He didn't want to be pursued for the following weeks after all!