Not true, unless you mean cracker to be white thug. Then yes, very much so. I think of it more as the hood on the west side of 65. When we were kids, all of my friends who lived over there called it Cloverhood. The east side of 65 is where ALL of the money is. Between Club West, the golf course, The Lakes, North Oaks West. Even older money like what used to be known as Olympic Glen. There are pockets that are pretty cracker though. The mobile home parks for sure. Lots of meth busts there. But for the most part, Blaine has become very rich over the last 20 years. They aren't an Edina, yet, but they are on the rise and have been for a long time.
Coon Rapids and Ham Lake, on the other hand, have more crackers than a saltine factory. Though, as you get further north they become less cracker and more hick. Pretty much 242 is/was the dividing line for me. Though that line has become very blurred since development has exploded. Anything south of say, old 10, is very much crackertown. Until you start getting into the Somali, Hmong, and the other pockets as you get closer to Minneapolis.