If you follow the author's line of reasoning, we shouldn't enjoy movies like Homeward Bound or Beverly Hills Chihuahua either because these just perpetuate myths about dogs too. And that's just silly. They're funny dog movies and everyone (except maybe little kids) know its all in good fun.
Best thing we can do IMO, is to lead by example. Train our dogs to the best of our / their abilities and when people come up and ask how our dogs do these cool tricks we use the opportunity to talk about positive dog training.
It only takes a second to say,"Oh go on Youtube and look up videos by Kikopup and DogStarDaily (Dr Ian Dunbar) or go to DogTrickAcademy.com. It's really easy and fun."