Indeed, poachers have always been around, and coyotes are now fairly common. However, I have never seen nor ever come across a fresh deer killed made by yotes in the woods ... ever.
Moreover, collectively hunters, doe permits and venison donation programs (don't want to debate the venison programs) have done a terrific job of reducing the herd from the high levels we had at the turn of the century to levels the insurance lobby and the DEC have hoped for. That is where I have seen whole herds decimated over the years. I have just started to see them rebuild a little at least in areas where I hunt.
Additionally, I am involved a program where bowhunters are invited and coyotes are not allowed to be killed - since it is a private park it is their rules. The coyotes are there, but the hunters are the ones required to reduce the herd each year because it becomes overpopulated if hunting is not allowed, despite the coyotes. This organization is not pro-hunting, they just believe it is necessary to reduce the population of deer to levels that are more sustainable for their forests, and if predators could do it, I wouldn't be hunting there.
In addition, just by the numbers hunters kill over 250,000 deer a year in NY not including all the ones which are lost. As friends in Deer Search tell me it is quite high.
Too many deer is a liability and a burden to the state, but I am not saying coyotes don't kill deer, they just don't kill as many as people may believe especially during the hunting season. They can adequately find a fresh supply of vension hunters have lost or the gut piles.
Just my opinion, my rant is over. To much snow and not enough to do.