It's the demand for animal products that continues the use of animals with their slaughter for those. Veganism turns from that demand. With there being crop deaths we may choose ways for that to be less. Veganism has less crop deaths than crops for continually feeding the animals being used for the demand for animal products. We can grow some of our own food when possible, too. If we do, crops do not make as much sense. They attract pests. But plants used for food growing just among other plants are not attracting the insects or small animals that crops would. Plants for food can be mixed among any other compatible plants.