If in 2021 the price of Bitcoin exceeds the price of 20000 USD then it is certain we can guess the Charless Hoskinson statement at that moment that the prediction of the day missed. lol
Charles Hoskinson is indeed human, but the price of Bitcoin is determined by the traders, not by the founder of Cardano.
So, the price of Bitcoin cannot be guessed maybe even next month the price of Bitcoin can go down to 5000 USD or even go up to 15000 USD.