Bitcoin is having a hard time to touch the $9k price though while trying to look if bitcoin would even reach the $9k and $10k. We can't just throw some wild guesses over there thinking that it's just that easy to predict the bitcoin price. No one knows what would be the future price of bitcoin.
It's not a bluff in fairness to OP. As you said, no one knows what will happen therefore back on January 3, no one also knows what will happen in a week. There is a chance that OP's claim might happen even for a 10-30% chance or whatever percentage you want to give. On January 3, the price is sitting around $6,900 to $7,000 and for $10,000 to happen, it needs a big push within that week. Given there might be a big hype or events happen on that week, that $3,000 increase is realistic within just 7 days.
What I disagree with the OP here is why we need to bet on something like that. Since it's just a wild guess on his own with no support or basis, better keep it by himself and no need for this thread like this.