Crypto analyst Kevin O’Leary has criticized Ethereum for its ongoing scalability issues, highlighting gas fees that have surged beyond $1,000 per transaction. O’Leary, along with trader MartyParty, argues that Ethereum's infrastructure is struggling to meet real-world demand, making it less viable for users. In contrast, Solana is praised for its faster and cheaper transaction capabilities. MartyParty has advised investors to consider shifting from Ethereum to Solana, emphasizing Solana's efficient high-speed network and pointing out Ethereum's delayed upgrades. Solana is currently trading at approximately $182, stabilizing after a recent price rally.