Yes, the retirement of NPR's Carl Kassell age 79 was long overdue, because he was getting to the point where he was too old to do his shows. There are a lot of young people that want to come in that can do a better job, they just need to be given the chance. NPR won't get rid of old ways and modernize.
I do not believe the retirement of NPR's Carl Kassell was long overdue. I believe retirement is absolutely natural at 79, in this day and age. I believe he could have retired earlier and that would have allowed a younger predecessor to take his place earlier, but that shouldn't be a requirement.
If he enjoyed his job for that long and still attracted enough listeners for NPR to continue to air his show then I think he was fine to stay as long as he did, I think if he was overstaying his usefulness at NPR it would have been reflected in the quality of the programming and listener base.
NPR's Carl Kassell has been a welcome voice on the airwaves for decades, and his retirement recently at the age of 79 was seen as a surprise to many of his fans and admirers. His voice has become synonymous with world events for many listeners, and things won't be the same without him now.