Correct . There are many types of coins on the market, but it will take a lot of time to look and examine them. One mistake, our money gets stuck there and we lose money. Yes. For ETH, besides being the king of altcoins, it is also the best to invest in. If the ETF is approved, it will likely fly without other coins adopting it using the Ethereum network's smart contracts.
You should be specific about the ETF, the ETF has been accepted and approved by security exchange commissions in other other places but US to be specific have not there own and with the way news are going, the chance of the approval is very slim. I could remember when everyone was waiting for Bitcoin ETF approval, there was some kind of green flag vibes that the approval was given but right now, it seems a lot of red flags are included in his fillings, so if you are holding ethereum because of ETF, then you have to reconsider.
I respect ethereum as the king of smart contracts and the community are very loyal. They don't snitch of abandoned the project for any team that want to compare and contrast, so if you want to hold base on the community bullish on the coin, then it's a good coin to hold for the long term.