The only problem with oat and almond milk is that they're mostly a suspension of cheap vegetable oil in water. Vegetable oils like sunflower oil aren't healthy.
I thought only diets and lifestyle can be healthy, regardless of what a single ingredient can do.
Also, if it is vegetable oil, how come there's protein in it? I thought oil is just fat? There's 4 grams of protein in 100mL of soy/oat milk (about the same as cow breast milk). Almonds on the other hand are a big scam with only 0.x protein, water with some flavour.
There are definitely healthy fats and unhealthy ones, for example everyone can agree trans fats are in the latter category. The perfect fatty acid profile is a matter for debate but it's definitely possible to isolate bad ingredients by a variety of means (populational studies, etc). It's not easy though, if it were then there wouldn't be so much debate in this space.
"[We] have known about the harms of fatty acid imbalance, and an excess of omega-6, for a long time. So much so that sunflower oil in the US was 'upgraded' through selective breeding to produce a high-oleic-acid variety (high monounsaturated fatty acid) that now prevails, and AVOIDS the potential harms noted in this paper. The same thing is now being done to soybean oil, and the high monounsaturated fatty acid version of that will soon replace the old variety.” https://www.forbes.com/sites/alicegwalton/2016/04/13/the-ani...
(EDIT: And the oil in Oatly happens to be rapeseed oil.)
(EDIT2: And the oil in almond milk is almond oil...)
There is very little evidence to support that consuming vegetable oils as a replacement for animal fats results in better health.
She has also done a TED talk that gives a very quick summary of the book:
That Wikipedia article doesn't really support your contention that vegetable oils are healthy and animal fats are unhealthy. That is, at the very least, a gross simplification. In my opinion, the research is not yet good enough to draw any such definitive conclusion.
Vegetable oils have been a large part of the human diet for less than 100 years, but have been progressively increasingly consumed by western populations, especially in the U.S. In that time overall cardiovascular health has trended in what direction?
Anyway, this might all be a sideshow to the general reduction in calories being derived from fat in general. The replacement of calories from fat with calories from carbohydrates seems particularly harmful when taken to an extreme, especially for women.
But, again, my main contention is that the evidence is at best preliminary, based on observational studies which cannot show cause and effect, and often poorly controlled and based on small numbers of participants. The largest, best controlled studies often don't support the mainstream view. It's simply not scientifically settled.