PS I'm not saying that UHT is necessarily lower quality, I'm talking exclusively about average consumer's perception.
Sometimes I just want almond milk to be cold right now. And also, the refrigerated milk section tends to be much easier to find than whatever place the store decides to put non refrigerated milks.
Consumers because they think of it as milk, and thus it should in the same section. Producers because they want that association.
> Though Ultra-Pasteurized milk is processed to be free of spoilage and harmful bacteria, it is not considered sterile because it is not hermetically sealed (i.e. canned), thus, it requires refrigeration. ... 30-90 days ... until opened
My ordinary American supermarket carries a ton of carton organic milk (refrigerated), and I think most of it is U-P.
[1] https://foodsafety.foodscience.cornell.edu/sites/foodsafety....
The rest, whether the milk is raw, pasteurised, UHT, or whatever, that's not to do with production anymore, but distribution and storage. So it's perfectly possible for milk to be both produced organically (so "organic") and also Ultra-Heat Treated (so UHT).