BTC price dropped and everything followed, price correction is to be expected since the market had been pumping a few days ago. It was not just ETH but almost everything in the market dropped.
that means ethereum can't leave from the domination that has been made by bitcoin. Another major crypto was dipping too due to the recent bitcoin dump.
The whales have been making a lot of noise around the market and they were dumping it when the market started to feel confidence with its position. There's not bad news about ethereum.
All of these drops were caused by bitcoin.