Edit: My last point is clearly demonstrated if the immediate downvote I received after posting this was from you.
> The statement "Veganism is unhealthy" is objectively wrong
The statement "vaccination is safe" is also objectively wrong (it's a medical procedure therefore it carries risk; the more correct statement is "vaccination is risky, but the tradeoffs are extremely worth it"), but saying it wouldn't "create an emotional reaction" in most people (except in anti-vaxxers, which AFAIK are a huge minority, and pretty much everyone would agree that they are extremely ego-invested in their opinion) (saying that it's wrong, however, might).
TIL.
Anyway, my aim isn't to debate you on specific subjects like veganism or vaccines. Just be aware that stating things in a blunt, opinionated way can have undesirable effects on your communications, regardless of your intentions.