I do believe that the Bitcoin price will rise very faster in the year 2021 because Satoshi Nakamoto is going to buy more Bitcoin to push the price up. He has got plenty of money to play the Bitcoin game to take the Bitcoin in its next stage.
I believe that too. But unfortunately, we do not know if that $60k will happen in December 2021 or it will not reach that price. I do not think Satoshi Nakamoto will buy more bitcoin because he already has more than enough bitcoin in his wallet, and he only needs to sell his bitcoin at any high price. But I guess that he will not touch his wallet for more or he will wait for another 5 years to access his wallet. But I am sure that many people who already have bitcoin now will hold tight to their bitcoin.
If Satoshi Nakamoto will indeed sell some of his BTC, it will create panic in overall market because he is holding millions of BTC on his wallet, It's enough to dump the market to the starting price of BTC. But I guess he will not do that because someone can track him in case he cash out his BTC to Fiat since many eyes are watching on his wallet address since the beginning.