You're reading into it too much. I read your response to the other guy and went to the first example my mind thought of for government regulation of foodstuffs that are safe to consume but otherwise banned for a reason.
I for one would eat endangered species if it's all I had access to, but I understand the damage it would cause and am comfortable eating other sources of food. I also do love eating beef and pork and chicken, but I'm willing to reduce consumption of those for other sources if needed.
We see a ton of rainforest being chopped to expand access to cattle farming, tons of pollution runoff from farms, and a history of antibiotic resistance being transferred due to heavy antibiotic use in close quarter factory farms. I would argue those would be equally damaging to not just us, but also many ecosystems and the species in them.
So I draw an equivalence there. If you're not cool with eating endangered species, maybe you can ease off the gas on mammal based protein.
On the other hand, it's looking like we might be able to get around a lot of that damage with lab grown meat.
Would you eat lab grown meat if standard beef/poultry/pork were to be banned?
Articulate the difference. You keep saying I'm missing the point or that there is a difference but you don't state what it is.