satoshi was obviously a opsec expert with deep knowledge of security, operating in a relatively low threat environment compared to today. Both the incentive economically and the attack surface is bigger now than the satoshi era. Satoshis keys went cold long before they were at any risk of beeing swept, and they are not actively beeing loaded into a adversarial environment for signing on a regular basis. Dedidcated signing hardware is a risk mitigation tool that can reduce attack surface and protect the user against malware and catastrophic user error when the keys need to sign anything. It is easy to create a wallet, load funds on a fresh os install in a clean environment and burn the keys. This is likely never to be hacked, but the user has no ownership over the keys and so the entire comparison falls short