I think the primary distinction is that a weapon in a criminal context is typically something that is used to threaten/coerce someone, or to enable you to cause (more/more severe) physical harm/incapacitation in a physical altercation.
Date rape drugs aren’t used to threaten/coerce people, and whilst they can cause harm, it is generally not the intended goal when someone uses them.
So whilst I agree that classifying date rape drugs as weapons is a good move, there definitely are relevant distinctions as to why drugs are typically not considered weapons.
I think the primary distinction is that a weapon in a criminal context is typically something that is used to threaten/coerce someone, or to enable you to cause (more/more severe) physical harm/incapacitation in a physical altercation.
Date rape drugs aren’t used to threaten/coerce people, and whilst they can cause harm, it is generally not the intended goal when someone uses them.
So whilst I agree that classifying date rape drugs as weapons is a good move, there definitely are relevant distinctions as to why drugs are typically not considered weapons.