The hint is not only how he named his goats, the hint is goat itself. GOAT - greatest of all times.

Many people don’t mind if price of bitcoin will stay at this point or even lower till the beginning of 2018. Here in the Netherlands and EU we should declare all our BTC and pay tax like any other savings. 31.12 is the usual date they take BTC price to calculate how much holders should pay.

I think the main reason that bitcoin suddenly dropped below 18k$ is this news.

https://cointelegraph.com/news/bitcoincom-cto-denounces-bitcoin-ive-switched-to-bitcoin-cash

There is a villa in Moscow which has been put up for sale for 3000BTC. The owner wants to sell only in bitcoins and real estate agents are looking into options since traiding for bitcoins is not legal in Russia.
I think this is as a good sign because people in Russia see bitcoin only as world's biggest bubble ever and most of them predict a big collapse and quick death of bitcoin to happen soon.

Regards.