Here is the Eth to BTC ratio chart for the last 5 years. We see Eth peaked to to BTC in value in since in mid 2021, and has been falling ever since, including in 2022, 2023, 2024. Lets see what 2025 holds...
Eth peaked to BTC as a ratio of 0.15 BTC to one ETH back in 2017 when it was the "shiny new thing". Since then, it has performed terribly to BTC, falling all the way from 0.15 to 0.036 - a decline trend which seems very likely to continue (for obvious reasons, if you understand the fundamental use case distinctions between the 2).
It would take a brave person to sell BTC buy ETH (or any alt) in 2025, (especially if the best logic you have is that there was a prior "trend" and that history will repeat itself - there really are always new and novel attempts out there to attempt to separate you from your Sats in exchange for something "better". And very year, and every cycle, lessons are learned...