If that were true, then it should have shown up on the charts in form of a consistent long term price rise. So far the only thing we've seen from ETH ever since 2018 (that's 8 years) has been a consistent dump (from 0.15BTC all the way down to 0.03BTC).
It's expected from it as well. ETH is a useless shitcoin with an unlimited supply, a huge premine, a centralized network, a mutable blockchain and many protocol flaws. It is already overvalued. Any of these things (like the unlimited supply) is more than enough to ensure long term dumping and less people buying it as time passes.
This is not actually what we actually see on past few years, because for many times we have seen that Bitcoin became the center of focus by lots of investors, that's why waiting for altcoin season sentiments floating way back before since there are people waiting for Bitcoin to dump so that they can possibly see ETH and altcoin market also goes up.
I think this site write some nice article about what happen on BTC and ETH for past few years.
The past year has shown significant differences in the performance of major cryptocurrencies. Bitcoin (BTC) has surged over 100%, whereas Ethereum (ETH) has seen a more modest gain of less than 10% (as of 2/10/2025). This Bitcoin vs Ethereum performance divergence has sparked discussions on the evolving roles of these two leading digital assets.
More details to read here
https://www.variwealth.com/post/bitcoin-vs-ethereum-analyzing-performance-adoption-and-market-trendsSo with those things like the only thing been relied by ETH are those most used network for DEFI and other thing, It cannot over take Bitcoin plus having no definite supply is not good to see that's why many investors prefer Bitcoin because it only have limited numbers of circulation which make it unique asset in the world.