I don't care for Mike Cernovich, nor do I buy the whole OK means 666 thing. I'm a SCUBA diver. We use that symbol all the time to mean "OK" so that other divers know we're good to go.

In many short messaging services there are "OK" emojis to reply with indicate you that you understood the previous message.

When your mouth is full of food you might use the OK sign to indicate you understood them because you can't talk with a mouth full of food.

Here in China people use the sign all the time and have no idea what 666 means or that it even exists as "a thing" in the West.

I put this whole 666 hogwash in the flat earth category. It's disinfo nonsense. Whatever else may be unlikable about Mike Cernovich, using the OK sign isn't one of them. Maybe he's just messing with you.