I didn't understand why people were saying that David Seaman was pushing the aliens/flat-earth theories, because in the tweets and youtube videos I saw from him he was explaining that it was a disinformation campaign that would be used to distract from Pizzagate. Admittedly, I haven't done too much research into David Seaman, so I can't say that he's hasn't put out questionable material/ideas, but I can say that the things I happened to see from him were predicting that this alien campaign was going to happen. Here he is on Feb 2nd: https://www.youtube.com/watch?v=66AJg8cTNRw