The softwar thesis explicitly avoids framing Bitcoin as money to study it's implications as a cybersecurity protocol. It is the existence of a security protocol that runs on the internet and is powered by real energy that makes Bitcoin good money. But money is naturally downstream of security in Bitcoin.
So when the military says that Bitcoin is a cybersecurity system, they're looking to use what others use as money to secure networks. A thousand sats and change in a utxo is a dollar to you and me, but can represent a signal to start an operation to deep cover operative. Is that signal money? Or is it a message sent on the most censorship resistant network on the planet?