The difference here is that I know I'm talking about fictional warp engines and not comparing them to real warp engines, which don't exist. You are equating real mental illness with a fictional disease. Do you know the symptoms of Irumodic syndrome? It could be anything, because it's all made up.
We know that it's a degenerative neurological disease that causes synaptic pathways to degrade.
I think NewHeaves makes great points. "Made up" disease or not, it could still be a great source of drama for the new series and I sure as hell hope they don't ignore it or handwave it away.
It doesn't and shouldn't be the focus of the show, but it could be a way to highlight real-world concerns about aging. It has the potential to make for great drama.
As for AGT, when Picard tells his present day comrades that he's shifting in time, they take him at face value and begin running tests.
In the future, they speculate that he's just having delusions. Seems like NewHeaven is making some great points about jumping to conclusions for the elderly and/or diagnosed.