I have see so much grabage coming from crypto ICOs via Facebook ads that I fully support the descision. I have been scammed by one ICO personally which was very active on Facebook. The other ICO that I had high hopes for also feels like a scam now. I am fault for taking John McAfee serious. He's such a fraud!
The Tether story and the Korea FUD are efforts to bring cryptos down and buy loads of them. So far so successful. Boom is on the way I feel. Happened when China and Jamie Dimon caused a havoc.