It's an interesting point. "Rarely hear" might be right. I would guess (and please correct me) that more than half of self-styled libertarians favor bitcoin strongly. But it's not controversial, we agree on that. So one does rarely hear about bitcoin. That's different from other issues, because libertarians disagree about those, and so we argue about them. As I said in another thread, the LP endorsed bitcoin in 2020. https://wyzguyscybersecurity.com/libertarian-party-comes-out-in-support-of-bitcoin/