I certainly don't live in the city and there is a lot of shooting and hunting that goes on here. His comments were not fact.
Fair enough.
But, your "facts" don't hold any more water than his...unless your situation is comparable to his.
The man said he hunts/shoots over a bait pile from his home, so those coyotes have obviously learned to be skittish around it. That is a "fact".
Obviously, your situation must be different. Any coyote that saunters within 25yds of a home / yard has not yet been properly 'educated', or outright exterminated.
Next time your pet coyote stops in your yard, SHOOT IT. Then, see how long it takes to have another one stroll past. I'd not be holding my breath in wait...