Is there a source that it was definitely claimed? The BTC have moved, but the site notes "[i]n 2018 we will likely reuse most bitcoins for other projects", and the transaction (splitting into two amounts of 9BTC and ~1BTC) aligns with this Tweet from December:

> PSA: the bitcoin piñata will be reduced by a large amount, the owner who lend the 10 btc wants to spent 9 on useful projects

https://twitter.com/h4nnes/status/939430639576715264