I am afraid you are right. For some inexplicable reason, my father became a rabid liberal. Maybe because it was his time to be ordered how to vote by the AARP, maybe because it was his turn at the trough, but for whatever reason, it became impossible to communicate with him at all.
I was sickened that a WWII Veteran had become such a leftist, and I am still sad that I did not speak to him the last two years of his life, but that seemed the be what he wanted.
My last words were, "If I wanted to hear that stuff, I would subscribe to the Boston Globe!"