I believe it said suspended 15 times in 15 years. I don't even know how you get that many chances at driving.
You can get your license suspended for all sorts of nonsense unrelated to operation of a motor vehicle. Driver license suspension has become a sort of all-purpose punishment for any behavior that the state doesn't like. Because "driving is a privilege" the state can suspend your license by fiat, without anything resembling due process. In much of the country, you're effectively under house arrest without the ability to operate your own car.
Also, in NJ "careless driving" isn't the equivalent of "operating to endanger" in MA. "careless" is more like "negligent"--i.e. not paying attention. "Reckless driving" is NJ's equivalent of MA "operating to endanger".