I would venture to guess, that for the purposes of this news item, the Pioneers are not relevant. They are further behind the Voyagers, and dead to boot, so even when they make it where V1 is now, they won't be able to contribute any new information.
On a personal level, the Pioneers and even V1 were before my time. I only remember hearing about V2 getting close to Neptune - I was 10 at the time and in the heart of my astronomy phase, gobbling any astronomy related tidbit I could get my hands on. V1 left Saturn in 1980 - I was 1.
On a personal level, the Pioneers and even V1 were before my time. I only remember hearing about V2 getting close to Neptune - I was 10 at the time and in the heart of my astronomy phase, gobbling any astronomy related tidbit I could get my hands on. V1 left Saturn in 1980 - I was 1.