It's also not as easy to hack electronic systems anymore. It's not that they are invulnerable, but the vulnerabilities are generally more complicated and difficult to exploit. Setting aside people still running Windows XP or something, vulnerabilities get patched pretty quickly today. State actors have the time and resources to still do straight up electronic hacking, but opportunities for individuals are sparse.

Of course there is still the human element. Most data breaches done by individuals nowadays rely, at least in part, on social engineering.