I'd make the counter-argument that you are optimizing without profiling first, and the environmental benefit yielded from convincing me to live slightly greener is insignificant compared to spending the same amount of breath on petitioning and lobbying for environmental legislation, but it's your own time you're spending. But even then, I won't back your political effort unless it includes pollution standards for container ships, research money for aneutronic fusion, research money for efficiently storing and returning energy from inconstant sources such as wind and solar, negotiation rules for including environmental considerations in international trade agreements, externality taxes on proof-of-work cryptocurrencies, and a laundry list of other points that I feel would each be more effective than trying to push an omnivorous species towards more vegetarian by word or by force.
If a company meets the criteria from my original post, it's an immediate victory, without any arguments at all. The price of beef becomes anchored by the cost of its closest cheaper alternative, and that price determines the price of livestock, and that price determines the size of herds. The argument from the pocketbook is superior to the one from hot air or hot lead.
...Some people will argue, just because someone is wrong on the Internet.
I doubt you'd see anyone arguing with you for any reason other than it benefitting them in some way, but it doesn't necessarily have to be because they are treating you "as a piece of meat". For example, I might ask you to reduce your meat consumption because in doing so you reduce your impact on the environment, even though you are a random stranger on the internet that I will likely never meet, because in doing so your actions indirectly have an effect on me.