Feng Jun said this primarily to reassure some people, indicating that he had no interest in those sensitive things.
Secondly, it's just that... he truly doesn't need those massive weapons.
Are mushrooms good? Of course, they are, but only within the Earth Realm, where they can become strategic deterrents.
In Tianqin, however, it's really just ordinary. At best, they can take out a Nascent Soul, but to incapacitate someone in the Emergence Stage is basically a dream. The speed at which the Emergence Stage performs Blink far exceeds the mushroom's explosion speed; even a prepared Nascent Soul True Immortal might escape.
When Feng Jun was weak, mushrooms might have been useful, but now, ordinary Nascent Souls don't qualify as his opponents. If he got mushrooms, what could he do with them... intimidate the weak?
