I suspect the rise of mental illness has much to do with economy. The more uncertain you are about the future, the easier it becomes to be steeped in resentment.
It is the other end of the wealth horseshoe: The wealthy are free of consequence, and consequence no longer holds meaning among the poor. After all, you don't have friends, a job, or a future. The only way anyone will remember you is if you leave a mark upon them. You may die, but the living are left with the suffering you have left behind.
...that is my guess about the mindset. :(
At this point, we should ask the patient to write a will, before the dementia fully sets in.
In real world context, that means asking leaders of Blue States to start preparing for the worst - housing, firearms, laws, sanctuaries, whatever it takes to batten down the hatches before the conservative hurricane lands.