I believe you are wrong about that because ethereum didn't show significant growth even before approval of ETH; bitcoin did not immediately soar, but it did rise from $30k to a new all-time high. Ethereum may have a different story because the buzz is not as high. The approval of the Ethereum ETF will undoubtedly provide a great deal of hope to all Ethereum users.
Ethereum is unlikely to follow Bitcoin's lead. Ethereum increased by 18 percent upon ETF certification, but then fell back to its pre-announcement price.
The introduction of ethereum ETF spot trading will have no meaningful impact on the price of ethereum. This is my two cents.
Even worthless pump to an insane price growth once hype on Solana network so you shouldn’t removed the possibility of insane price growth for Ethereum once spot ETF approved since it will create an instant hype to the crypto market.
Besides, A huge inflow of cash from traditional market will now go to ETH since only Bitcoin ETF is available right now for them. Many traditional trader will surely get some of ETH together with Bitcoin investment once the ETF was approved.
The current marketcap of ETH is still has a lot of space to grow if we will use Bitcoin marketcap as basis which is the obvious comparison of people when considering buying ETH.