The point is the nature of the network effects involved in adopting it. The fact that "Bitcoin" exists as a token that has market-based price discovery is incidental to the comparison.
The point of the Linux comparison is that there are viable use cases for mass adoption that do not involve masses of people directly interacting with Bitcoin in any noticable way.
Maybe a more obvious example of this scenario is voice-over-IP telephony. Basically 100% of telephone service is over IP on the backend now. But the public-facing interface is still a phone. Someone who still has regular copper pots service does not have to actually know anything about the nuances of how their phone calls are routed via IP in the background. Bitcoin could turn out the same way where the direct experience of users is through financial instruments and interfaces that resemble what they already do without having to directly interact with the Bitcoin network itself in any significant way.
This pervasive obsession I'm seeing with Linux adoption not directly increasing some kind of market cap is pedantic about a distinction that is irrelevant to the observation being made.