Ethereum is still the best, and all the hype that arises is based on and started from Ethereum.
See how memecoins that started out in Ethereum like PEPE and then moved to Solana and several other chains.
So if saying that solana is an Ethereum killer, it's still not enough.
Remember how the solana blockchain keeps going down when the transaction spike is big enough, is solana ready for that.
Ethereum has many experienced developers and that makes Ethereum survive until now and become the largest Chain for altcoins today.
The cost issue was only a matter of my time, when Dencun Ethereum was released a few days ago it was going to experience a gradual decline, and now it only affects Ethereum's Layer 2 chain.