Yes, Western Mass is the red-haired stepchild of the Commonwealth, especially the Pioneer Valley. The Berkshires at least can claim some semblance of culture as it is the summer home of the Boston Pops at Tanglewood. Northampton is the Provincetown of our neck of the woods.
As for being a Masshole.... I will claim the title proudly even though your side of the state has much worse drivers. Boston and anything inside the 495 beltway has always been a nightmare to drive in and nothing has changed in 27 years.