>There's enough in legumes\veggies.
No, there is not. It is almost impossible to get enough choline on a vegan diet unless eating an extremely restrictive dietary pattern, which is a fact that vegans don't like to talk about.
The turbo-quack Greger actually told people to avoid foods rich in choline, an essential nutrient. Maybe Greger isn't aware that a choline-deficient diet in pregnant women increases the risk of birth defects, and some men have phenotypes that require up to 750 mg of choline a day. A normal vegan diet rich in legumes and vegetables provides at most ~200mg of choline per 1000 calories.
Stop quoting that paper. If you actually read it, the paper says that vegans are iron-deficient, zinc-deficient, calcium-deficient, iodine-deficient and omega-3-deficient. That's the best evidence they could find to support their bias.
So why does it say that vegan diets are healthy when their own cited evidence clearly doesn't support that? Because the authors are all vegan, almost all of the reviewers were vegan, and because the American Dietetic Association was co-founded by vegetarian Adventists, who have a religious belief that animal products are unhealthy and that medical science should be actively infiltrated to promote these beliefs (Adventist Medical Evangelism, an organized branch of the church ~ amensda.org/ )
One of the authors, Levin, works for PCRM which is a front group for PETA.
Another author, Vesanto Melina, has written NINE books on veganism and vegetarianism, an obvious conflict of interest that was NOT declared.
The third author, Winston Craig, also sells books on vegetarianism and runs a website about the benefits of vegetarianism.
In conclusion. Vegans and adventists have religious and moral convictions that drive them to lie and deceive the public. You are dealing with literal lunatics who cannot be trusted to be honest about anything regarding the health effects of animal products or diets excluding them.