Actually, anosognosia is a real science thing that has nothing to do with sexism or ageism. It’s one of the more devastating aspects of dementia because the sufferer cannot be convinced that there is anything wrong. Check in with some families dealing with Alzheimer’s. Anosognosia is absolutely horrible.
We’re not Republicans. We don’t keep people in office who are not fit to serve. I’m not her or anyone’s doctor so I can’t say what her issue is but if Feinstein has dementia/anosognosia, then she needs to be pushed out of office because the Republic is more important than her feelings or even respect for her service.
As for Grassley, if he is exhibiting signs of dementia and anosognosia, then he should be pushed, as well. If the GOP doesn’t want to talk about it, well, chalk that up to the Trumpification of their voters - i.e. the majority of their party isn’t fit to serve but their voters consider that a feature and not a bug.