This is true, I think.
And it's often the people living in the suburban areas who are oblivious to it. Some will complain about congestion (supposedly due to removal of many of the out-dated one-way streets, though in my opinion it's more about evolving transportation demand and travel patterns as the city slowly continues to transition from being a hub for heavy manufacturing), the LRT plan, and the social issues that pervade the central city. But I have to wonder how many have actually experienced any of it.
My parents are a case in point. They're now around 80 and doing well but their trips largely involve medical appointments and groceries, and that's all generally close to home in East Hamilton and Stoney Creek. But they'll read an opinion story or letter in the Spec about the downtown area and believe it word for word. I doubt they've been downtown in years, and the last visit was probably to a restaurant with me as driver and maker of arrangements.