I don't know anyone who thinks they "don't" kill some deer.
Experience tells me they are not the predator that most people think they are. Coyotes are primarily scavengers, eagerly willing to take advantage of an easy meal. I'm willing to bet that I spend more time outdoors, than the average guy, and I've consistently observed that areas with the most Coyotes also have a high deer population. You could argue that is the number of deer that attracted the coyotes, but this trend is constant, year after year, with little noticeable change.
Now that doesn't mean that I love coyotes, because I don't. I'll kill those turkey egg sucking scoundrels every chance I get. I'm just encouraging folks to use their own common sense and experience, without falling for the market driven propaganda.