Recently, I saw Adam Back, the founder of Blockstream and one of the pioneers of Bitcoin, make some quite extreme statements about Ethereum. He is not the type to sugarcoat his words but directly points out what he considers the fundamental issues with ETH.

According to Adam Back, the main problem is not trivial. He highlights Ethereum's complex account design and especially the shift to Proof-of-Stake. In his view, this leads to higher technical risks and concentrates power in the hands of large token holders. Adam Back's conclusion is quite shocking: sell ETH before it drops to zero and switch to Bitcoin.

What he cares about most is the Ethereum Virtual Machine. Adam Back believes that the EVM is too complex, which not only creates security vulnerabilities but also causes large-scale hacks. He even links this complexity to security incidents on exchanges, where attackers exploit vulnerabilities in smart contracts.

Interestingly, Adam Back believes that no upgrade can fix these fundamental flaws of Ethereum. His perspective raises the question: are these issues truly long-term obstacles or just challenges that can be addressed? Anyway, Adam Back's opinions are always worth paying attention to when it comes to Bitcoin and other blockchain technologies.