Almond milk or the other "artificial" milk-a-likes are most of the times pure chemistry. You have to read the contents. Phosphates are added a lot (actually a big problem for people with kidney diseases, but also might be problematic for healthy ones as phosphates are added literally everywhere and the daily consumption amount might become to much) and stabilizers and all the other stuff needed for the artificial milk to look and to mouth-feel like the ordinary milk
You can't really call them unnatural because the techniques used are available to home cooks using off-the-shelf ingredients. I can buy thickeners and render oats into a fine enough powder to make oat milk, for example.
I'm personally more concerned about water usage per gallon of "milk-like product." Almond milk is pretty bad where that's concerned because almond trees consume an enormous amount of water that's often pumped out of aquifers at faster than the recovery rate.
You can't call stabilizers on phosphate basis natural extracts from trees. They aren't. These are chemicaly designed and made in a chemical process. Even if they are chemicaly exact, which is not the case, the amounts needed of that stuff exceed the available Carob gum trees by far. But the trees have phosphate. It's among carbon the second column of life. :)
Just a sample what has been corrected by law:
https://kstawinska.medium.com/7-harmful-chemicals-in-vegan-m...
The article doesn't mention di/triphosphates, it doesn't mention potassium and a lot of others. It's all a question of the amount consumed and that depends on the products and the consumers body/health.
Industrially made vegan products are more chemistry than homemade, about the same within pre processed food, and even more chemistry as if one would eat steak & cheese & potato in various shapes 3x a day.
And then, which of the vegan guys does make the meat imitation chicken teriyaki at home or never eat in restaurants outside?
But the Link is a good read. And it's not over, just study contents of all the products next time in the supermarket. I can't buy half of the products :)