It seems haven't read carefully enough and missed the point.

The question wasn't whether a vegan diet is "healthy". The claim was slightly different, but in an important way: It was suggested, that a vegan diet is healthier in general.

[...] I have provided a lot of evidence that vegans and vegetarians are healthier.

I have reasons to doubt you even read my thrid paragraph, where I explain why primary sources, i.e. links to to papers suiting ones point, aren't a good way to make point in this context. Your notion, that lobbying in the form of unsound research and biased opions towards the promotion of strict vegetarianism oder veganism wouldn't exist, is pretty naive. There are a lot of animal rights activists, who believe that "meat is murder", and religious groups for whom a strict vegetarian diet is a matter of faith.