Price of an Arizona Iced Tea 23oz can = $0.99
Price of the average bottle of water 16 oz = $1.50
Any poorly educated individual wouldn't understand the health implications of gulping 70g of liquid sugar when the only available data points to make food decisions are price and flavor.
People aren't really that ignorant, they make choices, often driven by short term desire. The corporations get this, but I feel like you are using poor as a synonym for stupid. We gotta stop treating poor people like they are dumb helpless animals, it gives them no agency.
Someone uneducated will not understand this well. It's not about being stupid or being poor either. You don't hear people blaming their problems on sugar...
I consume sugar products because they are delicious (dopamine release). However, I have the knowledge and education to make a conscious decision about moderation. I know how to read a food label. I know how to calculate the amount of sugar in a product. I know these things because I got access to education that allowed me to understand this.
No fucking Iced Tea Can is telling you that. You know what is telling you? Price: 99 cents, Flavor: Great... There's your problem. It's not about being stupid. It's about not having enough data to understand the implications of those decisions.
Uneducated people don't know about caloric guidelines or recommended processed sugar intake. The only mental filter for consumption of any edible product is its availability and personal flavor appeal.