Peter, I think you ferreted out the root of the matter.
I'm going to lay out a few facts, then retire, as even though I've been a diligent practitioner of the dhamma for over 27 years( and even studied for the robe for two years at one point) I've sensed my input isn't particularly welcome here, especially by administrators. I can take a hint. However, I was the sole Moderator of the e-sangha Vegetarian Forum for two years, then one of two Mods for the remainder of e-sangha's existence, so let me weigh in here, then I'll retreat back into my cave.
Discussions on the place of vegetarianism in dhamma practice always devolve into emotional arguments which inevitably lack logical cohesion, lack support from the dhamma, and end in chaotic ruins. We always had to shut them down. ESPECIALLY when Mr. Clueless Git was concerned. He always turned any discussion on any forum, into a shambles. I can honestly say we received more complaints about the Veg Forum than any other on e-sangha. Don't fall for this "I'm' not smart enough to follow complex arguments" persona. This man is a master manipulator. He can keep these arguments going for weeks, and tie you in knots of frustration, and turn your own words against you. In my opinion, he is not a follow of the Buddha. He uses the dhamma to support his vegetarian agenda, rather than the abstention from eating meat as a pillar of his Buddhist practice. We had several people like this on e-sangha, and they kept the place up in arms all the time. Some say this is the practice of "tough love" to wake people up to the cruelty of eating meat. I say nonsense.
It's bullying and manipulation. I discuss vegetarianism too. I also discuss all aspects of Dhamma. Get me started on Abhidhamma and I won't shut up.
If you Admins want my advice (totally unsolicited of course) I would shut this thread down and not encourage another one like it. If you let it run its course it will only get worse. This is my prediction, and I am no Nostradamus. Just a battle-scarred veteran of too many Vegetarian Wars from e-sangha.
With much respect,