He became bearish later on after estimating that we are near for this year's end. $9000 is a reachable amount for this year and he considers that too much price and speculation for this year won't ruin his reputation if he's going to change that. Buy bitcoin now while you still have a chance to have it under $7,000.
We may not see it below $7,000 again or I might be wrong but that's not going to stay there forever. I'm not an expert but for the past years you'll notice that every year there's an increasing pattern for bitcoin.