Sure you can. Forego the $100, and then sacrifice booze/cigarettes/lotto for a few weeks to make up for it.
Drugs and lotto are not a "basic need" yet a surprisingly high percentage of impoverished people prioritize them over said basic needs. It's a coping mechanism, yes, but 20 days of fasting cigarettes could easily yield the foregone $100
Your narrative is that the poor lack the moral fibre and self-control to quit.
The reality is that they lack the cash to quit. Drink, drugs, and alcohol are used as coping mechanisms to make life bearable. When people move out of poverty - for whatever reason - a substantial proportion suddenly find the self control to change their habits.
And your narrative is that the poor lack any sort of free agency.
The reality is that there is some wiggle room for sacrifice and saving that is not unreasonable. My next door neighbors are on Maryland's public assistance for housing program (which places poor families in middle-ish class neighborhoods), so they pay little to no rent. They live off of food stamps. Yet they smoke, drink, use marijuana every weekend, and play lotto (I know because they litter the used tickets on the ground).
Are all of those coping mechanisms necessary to make life bearable? Or just some of them? Is there some room to exercise free agency and periodically forego one or some of them to save a little extra cash so they aren't constantly in crisis? I say yes.
I never said all poor people use cigarettes, lotto, alcohol, and weed. But there are tons of studies showing that use of those things is elevated among the poor.
Anyway, the whole point of this thread is that having some buffer money allows you to make more optimal savings choices in the future. It's a cascade effect.
Even $1000 in savings as a buffer would allow you to make better decisions grocery shopping (you can afford to hold off and wait for better deals, etc.) or in the case of this article, have the patience to forego $100 now to get $200 later.
Drugs and lotto are not a "basic need" yet a surprisingly high percentage of impoverished people prioritize them over said basic needs. It's a coping mechanism, yes, but 20 days of fasting cigarettes could easily yield the foregone $100