You don't know what the word regular means. It does not mean acceptable or morally correct. It's synonyms include "standard", "usual", "typical" etc. It does not imply anything other than that. Dairy milk is the usual, typical, standard substance that is referred to as "milk" by 99.9% of the English speaking world.
Fuck oatley, get Elmhurst. It's literally just oats, water and salt. It doesn't separate in coffee/tea if your just adding it after it's brewed. You don't need all the additives, gums and other shit.
If your making latte's and such they do make a barista version with a couple more ingredients to prevent separation.