I have one some say is interesting.
There's this author I've enjoyed, in a way where you could call her an idol of mine. She wrote a few books I liked and I knew she went by a certain name and so I looked her up in a user directory based on this just as a way to entertain myself. Sent a request to be friends. The response was "request sent" and I was like "hehehehe, there's a really small chance that's her".
A week later I got a response and almost shat myself. But we talked and talked and soon she invited me to a few of her social circles. I accepted. And... one of them is a flat earther club.
I definitely don't mind and don't judge. We're still strong friends, we talk every day, and I'm a VIP in their social circle (I feel honored), but she's big on that stuff and there's a big discussion every now and then on the shape of the Earth, and it's an... interesting experience. So I just sit on the sidelines as the one woman who silently disagrees with the Earth being flat. ~~It's concave.~~