It's weird oat milk is only recently becoming popular. It tastes great, it blends well in coffee or tea, it's easy to make, oatmeal is dirt cheap, and it froths up nicely for lattes or cappuccinos or what have you. I'm glad it's catching on!
It does feel like a movement is happening - perhaps it's the time of year but there does seem to be more coverage of animal-free diets. I do wonder if they'll be a time in the future where eating meat becomes socially unacceptable?
Personally I've really cut down on my meat intake, and it's been easier than I thought. It's the final 20% that's the hardest though!
My SO works at a consumer packaging agency. They hosted a seminar on the rise of the vegan food industry a few months back. Moreover, here's another relevant graph:
https://trends.google.com/trends/explore?date=today%205-y&q=...
Nutrient wise, it's definitely lower in protein than dairy milk, but that's true of most plant milks, so it's no worse than almond there (though probably worse than soy, or than some of the newfangled ones made from legumes like Ripple, which is made of yellow split peas). Worth checking the label though if there are other macronutrients you care about.