I would be willing to wager that Carl Icahn is short the market and knows that releasing a video 2 days before the end of the quarter giving a massively negative view (suggesting that we need to correct a lot more and that interest rates should shoot up because its bubbles as far as the eye can see) will help keep the market down.
He is talking his book. Ignore him. He is wrong on the market and he is wrong on his target for Appple too.