Only about [1% of the population] in the U.S. is vegan. Yet 6.9% of adults aged 51–70, and 15% of those over 70, are B12 deficient, according to the National Health and Nutrition Examination Survey. That means the vast majority of B12 deficiency cases occur in non-vegans.

This is just throwing numbers around. There is no base for that claim anywhere. These numbers have no relation to peoples diets, only their age and b12 deficiency. No proof that of that 1% of vegans, 100% aren’t b12 deficient.