I see points in both your arguments Bjra and Cosmicdoodfanzo.
As far as the diet thing goes, it may help but telling people what to eat is never a good idea, unless you're a dietitian and they came seeking your advice, no one wants to be told you can't eat anything meaty.
As far as people not knowing what they're talking about. While it may be true, it's still nice to have people give you their advice, as alot of times it's given from experience of what people are told by their own doctors.
But in any case I'm gonna eat whatever shit I want until it kills me because it makes me happy. I get mad at people who ask 'is this 100% vegan never touched a mammal or a raindrop that was produced by humans and their pollution blah blah' like seriously, a steak every once and a while wont kill you. Don't act like eating it will, like everything, it's fine in moderation.
Poison is also fine in moderation, SEVERE moderation... but still moderation. and anything can kill you.
Nom nom nom