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Children get sent to the hospital after drinking too much of these. They put actual antifreeze or propylene glycol in these frozen drinks.
No they don't lol??? They just put a shitload of sugar in them, which lowers the freezing point by a few degrees, so you get small ice particles but no solid mass of ice. Some of them (like ICEEs) are carbonated as well, which further lowers the freezing point and requires less sugar soup to keep the ice particles from freezing together.
https://www.foodstandards.gov.scot/consumers/food-safety/buying-food-eating-out/glycerol-in-slush-ice-drinks
Glycerol is sometimes put in these, I think because it lowers the freezing temperature.
Glycerol and ethylene glycol (antifreeze) are very different in toxicity and effect. The reason for the caution for children under 4 in your article is because of its use as a laxative. It's not at all the same as vehicle antifreeze (which is toxic in moderate quantities, mostly dangerous because it's also sweet so kids and animals will drink a lot of it.) Propylene glycol is a secret third thing (also antifreeze, but relatively non-toxic - less so than alcohol - and is used in some food manufacturing but for different applications.)
Putting it in slushies sounds like a terf island thing? In burgerland we typically use HFCS because it's cheap as hell. The ICEEs listed here specifically use HFCS and carbonation for lowering the freezing temperature.
