Woofun AI reports that Trezor Chief Commercial Officer Danny Sanders addressed on-chain investigator ZachXBT's claim that hardware wallets are unsuitable for transaction signing. Sanders argued that while firmware updates can disrupt high-value operations, the critique primarily targets advanced users managing large assets rather than the general market. He noted that smartphones possess a larger attack surface due to connectivity features like Wi-Fi and Bluetooth, whereas hardware wallets offer independent screens for transaction verification, maintaining their status as the strongest self-custody solution for ordinary users. Tornado Cash co-founder Roman Storm partially concurred with ZachXBT, highlighting that mobile wallets currently lack BIP39 Passphrase and Air-gapped Signing support, urging developers to implement these security features.