Shmaybe? It seems pretty reasonable view for me, and my adherence to it would probably depend on availability of alternative food sources. Or perhaps people would dig deeper to identify the discriminating factors that would determine whether or not something can be eaten with clean conscience.

> That is the extent of my logic and mine personally has not included hypotheticals.

My feeling is that it's not the logic path you're having trouble with, but with internalizing the concept of updating your moral framework based on independet reasoning.

Human sense of morality comes partially built-in, and is partially supplied by the groups you live in. That second part is mostly your local culture, i.e. the assumptions and patterns of behavior in the background. Most people tend to keep to those two sources - independent reasoning about morality, while a well-known concept since the times of ancient philosophers, doesn't seem all that common. Perhaps it's because it's difficult - it often hurts thinking about it (i.e. you probably wouldn't be wondering about some chain of reasoning having moral implications if you knew you're in the clear with respect to those implications).

Culture changes pretty slowly - on the order of decades. That humans and animals are the same thing, that animals aren't as dumb as they look, that animals can feel - those are relatively recent scientific insights. What you see as a minority of people using this knowledge and logic to stop eating meat, is the process of our culture slowly updating itself to catch up with the last 200 years of science. It'll take a few more generations, but climate or not, I'd expect that in 100 years people would be mostly vegetarian by cultural pressure. Right now, it's mostly independent reasoners (ok, and some virtue signallers too).