The biggest change to my diet when I went vegan was that I replaced meat with various other protein sources. These are typically going to be soy (tofu) or wheat (seitan) or some other type that is made of a widely available and automated food source. By eating this way, I am making my food production far more efficient. 75% of all of the grain grown in the US goes to feeding cows, pigs, chickens, etc.; the meat industry. This is because feeding animals to feed people is highly inefficient.

I don't know that I eat more fruit & vegetables than the average US citizen. I'm not particularly a fan of them, although we do include them in dishes that we make.

My first point is that being a vegan reduces agriculture by a great deal.

I'll also submit that it is highly likely that in comparison, due to the processing around meat, that it has similar if not more exploitation of people in its production, and not a small part of that is the sheer amount that the agricultural sector needs to grow in order to support it. They chop down the Amazon Forest to grow soy. Not to make tofu, but to feed cattle.