I'm not big into vegetarian substitutes but oatmilk is legitimately delicious. It's good for lattes, cereal, whatever. I guess maybe not good for baking?
For baking: depends on the recipe. In one recipe of a sort of muffin style bread that uses egg to rise (no baking powder, yeast, etc), oat milk makes it not rise properly and you get dense bricks instead. Other recipes have been fine. YMMV.
(Though, I quite like the non-homogenized full fat milk with bits of thick cream floating on top too. Oat milk, while pretty good, got nothing on that. Perfect on the porridge for breakfast.)
Yup. I don't normally eat vegan but, if I'm drinking a latte, it's gonna be oatmilk.
The thing that gets me is that the price of oat milk is so completely divorced from what it cost to produce. It's absolutely wild that oat milk, made with one of the cheapest bulk grains, is as expensive as almond milk, made with an expensive nut.