I have a Flumper cousin. We still adore him even though..yeah...he's swallowed the Kool Aid. He's been very good to us, very generous, and yes, we will still see him.
I try to get him to not talk about politics. For my birthday, his wife wasn't there to tell him to shut it, so I tried to shut him down for a while but alas I gave up. If Nonnie were there, he would have stayed quiet. She literally forbade him from talking politics in the house LOL (she's a solid lib like the rest of us).
We still love R though.