BTC increased to 62k$ after the FED announced interest rates.
BTC.d did not increase further but is still at 58%.
USDT.d continued to decrease, proving that many people could not wait any longer and were fomo buying altcoins when the market started to run.
Maybe BTC.d will continue to increase but if USDT.d decreases, altcoins will still be green, because there is still a lot of USDT in the market and many people have not entered the market yet. When the market keeps increasing in doubt, they will be the ones who fomo.
My concern is that when everyone is excited like this, the market will have a flash sale, probably because I am too skeptical.