

Not all of them, no.
Most of them don’t do those nice, sturdy bubbles at all, but they’ll get close. Iirc, almond milk comes closest…
It matters in some recipes whether or not the milk substitute will have the right properties. Say, something like a mushroom cream sauce, none of the substitutes work because there’s just not duty enough fats. Milk gravy is hit or miss, with almond being the least bad choice iirc. American style biscuits, soy and almond do okay, but need extra acid to get a good rise like you can with buttermilk. But they sub in fine for regular milk in terms of texture and taste.
Stuff like that. Blowing bubbles is a quick way to test a fake milk. Or even types of cow milk, or milk from other animals. Goat milk, as an example, is so close to cow milk in terms of structure it’s an easy substitution if flavor isn’t a factor. The powdered milk you can get for long term storage or baking is no better than the usual non dairy stuff when reconstituted, and not even as good as skim milk despite being the dry parts of skim milk.
For good bubbles, you need fats. And they need to be similar enough to milk fats, so there’s a high degree of parity between a bubble test and cooking outcomes
The fuck are you smoking? Russian grown weed, I guess