

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. And intent/willingness to use a weapon to physically harm someone, in my opinion, is a relevant distinction to relatively “”“peacefully”“” knocking someone out. Of course committing date rape is still an utterly horrific thing, and people who do it should be charged and held accountable to the fullest extent of justice, but it is still different from threatening someone with a weapon and forcing yourself on them. (Also, whilst I have no actual data on this, it seems logical to me that a conscious victim is far more likely to receive (more serious) injuries as they struggle, vs. an unconscious one)
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.

In general it can be said that poor people do not have the capital to make upfront investments which become profitable over time. Not even just literal investing, but investing in things like a more fuel efficient car, upgrading the insulation in your house/apartment to save on heating, buying non-perishables in bulk when there’s a good deal, buying a dish washer instead of hand washing…
So many things that let you save tons of money in the long run, require relatively large upfront investments, that poor people can’t afford. That’s a big reason why poverty can be such an insidious vicious loop, that can be extremely hard to escape from.
Two identical households, with identical income could have vastly different financial situations, just based on if their income was previously low, and they weren’t able to afford any of these investments, vs. If their income was previously high, having allowed them to previously make these large investments to reduce their long term monthly costs, and secure enough liquidity to be able to continue occasionally making these investments.