People wondering what's happening today, are confusing decentralised governance with decentralised prices.
Most coins have decentralised governance by their nature, but it'll take some more years until BTC becomes price-decentralised; right now few people control a lot of wealth and there's not enough liquidity to support the price, one whale can manipulate it as they want it.
As for today's fall, I don't believe Dr. Clown did it, he most likely wanted to make people FEAR that he might have tanked the market and that he has the power to do it again, that's why he tweeted this (https://twitter.com/ProfFaustus/status/1062751765601361923) AFTER the price had fell.