Encryption is a 2nd amendment issue. It's not a private expression, encryption algorithms are armaments that have always been used as such in warfare, and still are. And the Internet means that private citizens are routinely defending their intellectual property, monetary assets and reputation from organized crime and nation-state actors.

And we all get roped in to the tedious work of recognizing phishing emails, changing passwords, using 2FA and patching software that makes it possible to do business in the modern economy. When we fail to do so, our systems are then owned and used to make war and attack others.

Hence, we are all part of "a well regulated* militia [that is] necessary to the security of a free state."

* "well trained" in modern parlance