It's getting better but the amount of ignorance about Detroit is amazing! I tried once talking an evangelist into adding Detroit to the road show around twenty years ago. There had just been an article in Time magazine and it said something like the city had the lowest number of college graduates per capita of any major city and there were less than 670,000 people. The guy immediately hit me with that fact. He said we couldn't possibly go to a place that small and if we did there wouldn't be that many developers.
I said that may be true for the city of Detroit but the Detroit metro has over four million people and I assure you there are a lot of developers. So they decided to add Detroit as a tour stop and he later told me that it was one of the largest and most enthusiastic audiences on the entire tour.
Even today Detroit gets left off most tech tours and when one does add them they're pleasantly surprised by the turn out. That's despite the fact that Amazon, Microsoft, Google and Twitter have offices there.