I know a man and a woman who have been pure vegetarians for almost 80 years. Therefore everyone on earth can live healthfully on a pure vegetarian diet. Obviously, there's more sand than concrete in the mortar of this kind of reasoning. Since we don't live with these people, we don't know what they actually eat or the real state of their health. Personal testimonies are powerfully persuasive, but when you're claiming a diet is perfect for everyone, you have a moral obligation to include objective as well as subjective information.
Love is blind.
Ray Charles is blind. Therefore Ray Charles is God. Enough about sloppy logic. This writer almost always labels his diet as vegan instead of vegetarian. Unfortunately, some individuals whose identities are so intertwined with diet and health labels will also look you in the eye and lie through their teeth about what they actually eat and their real state of health.