In Chen Mo's previous life, the sect of severance had been prosperous for a while, but it was later cut down so badly that most players turned to expand the sect.
The split bullet was actually quite fun to play with. It was a bit too much to just disable it in one hit, so Chen Mo didn't do as much damage as he did. The damage was pretty much normal, slightly weaker, giving the players a way to skip class.
As for the party experience ... Anyway, using this thing was similar to spreading the religion. It was equivalent to silently acknowledging that one had no friends. If one was comfortable solo-farming, forming a party would definitely be affected.
Unless your teammates are like you, they are also from the church ...