I am entirely willing to take your word on this, but you know what they say about "anecdote" and declensions thereof. In this case specifically, one of the few things that seem to be reliably true about nutrition is that "people are different, and what works for some may fail or be outright disastrous for others".

In any case, Raemon seemed to be making a weaker claim than "vegetarianism has no serious health downsides". "Healthy portions of meat amount to far less than the 32 oz steak a day implied by some anti-vegetarian doomsayers" is something I'm completely willing to grant.