Most hunters haven't farmed...I tell them, take 20 cows and put them on 10 acres and you'll have 20 skinny cows...Drop down to 5 cows and they'll be healthy...
Most can start to understand when you make it that simple...Less deer mean the ones there get the best nutrition...
We use to see 40-50 deer an evening in one field, this was back in the early 80s...My brothers and I got busy and also got help from friends, nephews, nieces, etc...It took about 10 years to get things in check...We still see 6-10 deer an evening but the biggest change has been nicer bucks and more chasing during daylight hours...