@doG "its silly to change your diet because of belief."

I diametrically disagree. Reasonable choices are supported by evidenced beliefs.

Reasonable thinking has evidently better odds than luck or faith at making choices to affect a desired outcome.

We could postulate arguments about vegan diet, including nutrition, suffering endured by the animals, harm to the environment, or other claims about veganism. Such debate, if healthy, tends to lead to better understanding and thus, more informed, better choices.

However, the fundamental question is the Vegan devotees' prohibition of such discussion on the basis that certain questions are taboo. It is this tabooing of the topic that is the problem. To questions their belief at a variance from their established standards; to even consider the arguments in opposition to their position, is verboten.

No matter the empathy, civility, and reasonableness of the raised questions, the question are verboten. They hold an unquestionable belief that Veganism is the way.

If your belief requires that opposing views be silenced, you don't have good reasons for holding it. That doesn't mean that good reasons don't exist; it means that your position is not based in reason.

(I also pointed out some claims about veganism a few paragraphs above that might serve as topical matter.)

Unquestionable belief is a foundational problem of faith.

But their unquestionable belief is less reasonable in the context of reality, where the majority of society consume omnivorous diets. Thus, it is not just that their belief is unquestionable, but that their approach to dealing with any questions to their unquestionable belief hurts their cause. Thus, we have an unquestionable belief system held by a minority. That's cultlike.