Gao Yang thought Li Jinfang was okay, but it turned out that Li Jinfang had ultimately been unable to get over the hurdle in his heart.
Li Jinfang's psychological state had deteriorated to the point where he could not participate in battle. Gao Yang had no choice but to administer a strong dose of medicine to Li Jinfang, shattering the false image Li Jinfang had built up for himself and others, so that he could see reality clearly.
This strike by Gao Yang was enough to completely break Li Jinfang psychologically. Then, if Li Jinfang could rebuild a healthy mental state, it would be best if he could stay on the battlefield. Otherwise, Gao Yang would really have to make Li Jinfang leave.
Making Li Jinfang leave was for his own good. If Li Jinfang still had a strong tendency to self-destruct and went back to the battlefield, he would only die quickly in combat. Gao Yang didn't want him to die, so he could only kick him out.