PnYx Just ignore him, he's like that, he did it once with me. I don't know if it's because of paranoia or because he enjoys it, but he goes through life labelling people he doesn't agree with as "trolls" and treating them with arrogance. I remember when he did it to me, hehe, my answers hurt the poor guy so much that he had to delete the discussion xD
I don't want you to think he's not right either, it's true that Keybase is not a reliable alternative because of its acquisition by Zoom, but otherwise, as I said, don't give it too much thought and just ignore it.