Earlier quoted context omitted.
More crops are grown to feed the livestock than people, so if you want to save the field animals and insects, going plant based will save even more.
Not sure this is true if you're looking at free-range though. There are many places which are not very amenable to growing crops fit for human consumption, but are more than adequate for growing the grasses (and more) that ruminant digestive systems (e.g. cows) can easily digest. So if you're growing soy on deforested land as a base for your "cruelty free" burger, it is very possible that this has damaged the origina…
Exactly. It's not like animal husbandry and meat-eating developed as some kind of ostentatious wasteful consumption. It's a way of converting inedible plants into edible meat.