A) The vast minority of animals consumed are hunted in the wild. It doesn't even dent the statistics.
B) Killing off wild animals is still unethical for the endangerment factor and objective wrong factor.
C) City commissions accommodate hunters by clearing forest to create unnatural clearings which is what enables deer and some other animals to procreate more than they would naturally (because the landscape was altered to accommodate them), which means the initial trees were killed to their benefit, and the subsequent greens that grow in to replace them are essentially "raised" because they are growing in an artificial environment. On top of this, hunters primarily hunt the males, and deer exist in a 1-1 male-female ratio in nature. So, hunting the males selectively ultimately means that fewer males do more of the mating, which means that the birth rate does not curb--- so the population remains unnaturally high, and more plants subsequently die.
So, your argument is invalid.