More speculation: There's a chance that it's related to:
/index.php?topic=5547249.0Because the timestamp of the OP's last reply to confirm his doubts has a relatively good gap after the 10k BTC transaction's timestamp.
His last post was
before the transaction, not after. It would be cool if it's him though. Somehow that scenario sounds a lot more fun than someone who has sold similar amounts of Bitcoin over the years. From zero to
tres commas 
I actually found “Ahalipoor” on X and he said that he still hasn’t found his keys.. either he’s lying or lying about being the owner of the wallet, or someone somehow got into this wallet after 14 years..