It boggles my mind anyone would ascribe to a diet that literally requires vitamin supplements through artificial means in order to be complete. And those are just the obvious deficiencies.
Cows don't make it, they eat it in soil. Which, actually, because most of them are factory farmed, they are fed the supplement. Nothing natural about that; in fact, you're just skipping the middle-man and cruetly.
"But I only eat grass-grazed happy cows!" Good for you! Now how about a solution that can work for everyone.
You want to know what the real next pandemic is. It's going to come from the unbelievable abuse of antibiotics the meat industry is responsible for. Medicine will be set back a century.
I used to think that, but at some point I thought: what's the big deal? If you're still eating healthy, still eating tasty food, and you just also consume a pill or two every day, is that really so bad, or does it just feel "wrong"?
Most non vegans also get their B12 through supplementation. It just is fed to animals directly or indirectly as cobalt supplement.
> Most forages and feedstuffs fed to dairy and beef animals do not contain adequate quantities of cobalt to support the rumen and animal requirements. Consequently, supplemental cobalt must be added to beef and dairy rations. [1]
[1] https://agriking.com/importance-of-cobalt-to-beef-dairy-catt...