It is like usual that Ethereum is following the price move of Bitcoin. I've already saw this in few bullrun season, Bitcoin will increase significantly first before the price of Ethereum and other altcoins skyrocket. However, there should be time for sideway of Bitcoin price. At that time, people prefer to focus on altcoins and it will be altcoins season. But I'm not sure whether the scheme will remain the same as in the previous bullrun seasons. Since there is no certainty in crypto, it can be changed at any time.
Understand correctly, this kind of thing doesn't always happen. If they accept spot
ETF-ETH - do you think bitcoin will rise as much as ETH? I'm a little doubtful about that. + depending on what stage of the market it will be and how strong the pressure from buyers will be. I personally, invest not the last funds + try to observe risk management. It is better to under-earn than to potentially risk funds.
P.S. Don't forget, cryptocurrency is a high-risk asset. Any manipulation = potential loss of funds.