IMO this is really inaccurate. Rochester Hills, Bloomfield, Royal Oak, Grosse Point, all very wealthy cities .... the problems are simply accentuated by the scale economic growth/collapse, but it happens in West Michigan as well (Benton Harbor, for example).
I went to school near Benton Harbor. It's incredible to see the literal line between Benton Harbor and St. Joseph. It's like ghetto > river > water front mansions. Pretty crazy to see such different perspectives within such close proximity to each other.
I am from flint and now live in Rochester hills. There are some OK parts of flint but really there's is nothing you can say that is nice other than the colleges.