Maybe, but the RFK account had several people confirm it was him, including Jack. Someone posted an email they had requested the campaign confirm it's him and they responded (could be faked easily). None of this is as good as RFK himself posting on Twitter or his website about it, but given that the RFK nostr account hasn't done anything since that day I don't think it's something to worry about. If it were active I think that would be another story, but I could see him doing this at the request of a friend just to humor him and then forgetting about it.

As for Obama, I hadn't heard he was on here. That seems like a stretch, I wouldn't trust that one.