If it were in normal peace times, if the 6 generals were to tender their resignation, Han Qiong would definitely be overjoyed. It would allow Yue Zhong to put his trusted aides into the armies.
However, at this critical moment, the resignation of the 6 of them caused Han Qiong to be vexed. However, after clarifying with Yue Zhong, she relented.
If they were forced to stay, who knew what they might do during a crisis. It would be better to let those without the will to fight, leave.
Due to their departure, it caused a wave among their subordinates, and many commanders who were not willing to risk their lives immediately followed their example.
If it were Wei Ming Qing, these people would not have dared to be this audacious. However, since they had just recently pledged themselves to Yue Zhong, their loyalty was not set in stone yet. Yue Zhong was helpless, but he had to let them leave.