Well I sense quite a lot of emotion...
I'd agree its an emotional subject but if seen with a bit less emotion a few things might get clearer.
Well its not like a few hundred years ago. Hopefully it will be again, at least in places where people wake up and realize there are different methods of feeding animals and raising crops. There are already quite a few people who do, and people who are willing to go there.
Farmers markets and direct sales from farms are an example, where it can be asked how it was raised or how animals are fed. Often its with self raised crops and not much additives.
Well concerning animals they feed from plants, have to eat ten times in plants what they grow as weight so there has to be a multiple in substances intaken. If you eat the plants directly you have less substances that affect you. And not all substances can be flushed out. There are nowadays substances which stick to the liver and other organs.
There are for example detox procedures which can be looked up, if people are interested. And there are quite a few plants that detox, like wild garlic.
Well from your answers I'd suggest a few different points of view...
there are plants which have mechanisms to fend off bugs etc. Like nutrition ingredients, or oozing special liquids if attacked.
But a) this may work differently for humans b)there is a huge knowledge that was always present concerning plant healing, which plants are useful, when they best should be harvested etc. People and plants always used to live together. If people are intuitive, like people used in old times, they can sense for example if an apple has a lot of energies or if its only waxed and looking good. It can be trained a bit, and used for shopping.
Or for self growing plants.
I have read quite a few points of view saying that some plants and people live in symbiosis... the plants being spread around the world and grown this way, being useful.
So there might be a point of view reached where it can be seen that it can be a give and take for both. As said, people used to live like that for ages.
What I would agree with is that there are people trying to trick into unhealthy behaviour. But with intuition this can be seen through, and in my opinion this is the last years more and more the case. People are sick of false tactics and are willing to look for decent products.
Well concerning food cravings...
its possible to direct some a bit more towards plants, so the cravings concerning meat might go back a bit.
As said, its similar to what the body is made of, and hormones there have an influence.
In old times the animals were always calmed down and were kind of asked for consent. There were not much fear hormones produced, which might have an influence.
And ecologically, well its a factor of ten times their weight with plant intake, and some say including energy its a factor of twenty compared with direct plant intake.
So its quite a number.
Well there is no need to become vegan from the start... but directing a bit towards more vegetarian nutrition could have good causes.