1. Powell commented cryptocurrencies as "a speculative asset" which leaded to an adjustment in Bitcoin price but a rising trend in Gold
2. US President is considering spending $3 trillion on infrastructure in the States which draws investment capitals into the US stock market
Even there is an adjustment in the Bitcoin price these days but it is expected it will recover soon.
The reason why Bitcoin drop or I think you should change the title
"the reason in my opinion" why Bitcoin price drops recently.
For me is simple I don't care, I will keep holding my mine if dumped I will buy more, Simple im an investor, not a trader I have a target for long term, so fluctuations of price is not truly matter
Something I have learned in the Bitcoin market, and it is that many times the news of this style does not affect the price of Bitcoin much, unless it is a fundamental, but in the same way something very peculiar happened that after the statements of Powell the bitcoin began to fall, but I think it was by pure coincidence, currently bitcoin reached $ 59k and is about to go through that enormous resistance, we can also say that there is good news for China, and on the part of Paypal to integrate citizens Americans to spend in Bitcoin causes certain emotions in the market, and this can have a positive influence.