There are no hypoallergenic dogs. There are degrees to which dogs shed, but it's not specific to any one breed and can vary wildly.

https://www.akc.org/dog-breeds/hypoallergenic-dogs/

That's just false reasoning for buying an Instagram fad dog, save admitting they are buying a fashion accesory

(Yes I'm annoyed by those who buy a dog to be an accessory and don't bother training them. There are loads of them where I live and they are annoying at best and menaces at worst)