If you care about security, why not consider Qubes OS? Related discussion: https://forum.qubes-os.org/t/qubesos-vs-openbsd-security/790...
Qubes OS uses the Linux kernel. Without wanting to start a flame-war and with all respect to Linux, it’s not even close. See: https://en.wikipedia.org/wiki/OpenBSD_security_features
I was looking at that thread and honest question: how does Qubes OS deal with the binary blob issue? I would guess it is deblobbed to a certain extend according to [0]
But I couldn't find if they have a strict "no binary blob allowed" policy like OpenBSD.
- [0] https://doc.qubes-os.org/en/r4.3/user/troubleshooting/pci-tr...
If you really really care about security, then consider CHERI and CheriBSD
https://www.cl.cam.ac.uk/research/security/ctsrd/cheri/