This is absurd. There will come a point he cannot do even that reporting and when it comes, it will end. But having lost multiple family members to the ravages of dementia, I can say with painful first-hand experience that were there someone of a comparable familiarity to Mr. Ritter to those relatives, it might have eased the early pain and fear momentarily. Understanding what's happening and realizing the diagnosis itself is not an immediate sentence to be banished from the world they knew. The immediate isolation while they retain the memories and the ability to communicate is devastating. Reports on Alzheimer's will be hard to watch for many. Hell, I've been through it and they'd be hard for me, triggering painful memories. But it's important that we understand that there is still so much value someone with a disease like that can bring even if their decline is inevitable.
While I'm sure ABC, or any network, would love complete overlap between shows, the reality is, especially over weekends, that people are not tuning in to each broadcast and paying the kind of attention folks on board like this do.