He and his wife are planning all the things they would do in early retirement. His death taught me an important lesson about not waiting too long to do the things you really want to do with the people you really want to be with.
Another of my wife's friend has been suffering from a cancer that was expected to kill her about two years ago but she just keeps going and surprising everyone. Cancer can be so damn capricious.
By contrast it took several years to kill my mother. Even the last days were long and protracted.
There seems to be a wide range of patterns as far as my own experience goes.
The first sign anything went wrong at the end was a routine scan showing a small amount of growth 2 weeks before his death. The second sign anything was wrong was a phone call I got on a Friday where his speech seemed very tired. On Monday I got a phone call saying to fly home. He was awake but not especially alert when I got there. He died on Thursday or Friday.
So all that to echo that the trajectory of this person's illness is believable, whether or not the story is ultimately true.
The doctors told us they had never had a GBM patient deteriorate that quickly. Watching somebody perish from pneumonia put it pretty close to the top of the list of ways I don't want to go.
In any case this is also to say that we don't want to make too many assumptions about whether a case is real just based on timelines. People can either blow right pass the timeline, line up with it, or perish very early.
So I half want to upvote you both for the points you're making about variable, unpredictable survival times after diagnosis, and half want to hug you both in sympathy for the way you lost your fathers. That must have been rough and I hope you have found the support you needed.