A lot of large investors follows Elon Musk, and when Elon Musk writes something good about cryptocurrencies, then immediately these cryptocurrencies begin to grow, and if Elon Musk writes something negative about cryptocurrencies, then immediately these cryptocurrencies begin to fall in price, therefore, the cryptocurrency market is definitely reacts to tweets from Elon Musk and about bitcoin, of course bitcoin will reach 100k$, just need time for it.