The fed tightening will cause hyperinflation in other non dollar countries and it will push those populations to bitcoin as a savior. The fed easing pushes the USA towards hyperinflation and pushes USA population towards bitcoin.

Bitcoin is the currency of the Internet: a distributed, worldwide, decentralized digital money. Unlike traditional currencies such as dollars, bitcoins are issued and managed without any central authority whatsoever: there is no government, company, or bank in charge of Bitcoin. As such, it is more resistant to wild inflation and corrupt banks. With Bitcoin, you can be your own bank.