No, nothing would replace it, same with any of the other freebies. It'd be your choice whether you'd want to use them or not.
That being said, remember that in SU weapon does not necessarily mean a thing to attack with. Steven's weapon is his mother's shield, which he uses to protect people. While he could use to attack as well, he (and Rose herself, who took up a physical sword along with her gem created shield) uses it primarily to deflect.
Basically what I'm saying here is it'd be a "loose" definition of weapon - whatever would suit the character best basically. Maybe a character is like Steven and just wants to protect others. Maybe another doesn't want to hurt the monsters but does want to stop them from hurting others so their weapon is a net. There's a lot of possibilities, even for pacifist characters who don't want to hurt anyone.
no subject
That being said, remember that in SU weapon does not necessarily mean a thing to attack with. Steven's weapon is his mother's shield, which he uses to protect people. While he could use to attack as well, he (and Rose herself, who took up a physical sword along with her gem created shield) uses it primarily to deflect.
Basically what I'm saying here is it'd be a "loose" definition of weapon - whatever would suit the character best basically. Maybe a character is like Steven and just wants to protect others. Maybe another doesn't want to hurt the monsters but does want to stop them from hurting others so their weapon is a net. There's a lot of possibilities, even for pacifist characters who don't want to hurt anyone.