Micros:
- Vitamins: A, B[1,2,3,5,6,7,9,12], C, D, E, K
- Minerals: Ca, P, Mg, Na, Cl, K, S
- Trace minerals: Fe, Mn, Cu, Zn, I, F, Se
Or even macros:
- Glucose
- Fiber
- Lipids
- Essential amino acids (EAA's): his, ile, leu, lys, met, phe, thr, trp, val
- Conditionally-essential amino acids (CEAA's): arg, cys, gln, gly, pro, tyr
Your definition of "extreme" is extremely dishonest FUD.
As far as the extreme label goes, any highly restrictive diet is extreme. Veganism, carnivore, keto, etc.
Meat agriculture is killing us slowly like cigarettes and cancer, and kills us quickly.
1918 most likely zoonotic route:
Birds -> pigs (at a "piggery") -> humans.
2019 SARS-CoV-2 most likely zoonotic route:
Bats -("wet market")> humans.
You seem to emphasize edge-case FUD and "other" people who don't agree with your value judgements rather than opening your eyes to meat agriculture as a slow-moving existential threat to our survival like and causing climate change.
It's very unfortunate that you're so narrow-minded.
Anyone switching to a vegan diet certainly would be well-advised to pay attention to micro-nutrients and make sure they have their bases covered.