As a copyright abolitionist, I wholeheartedly agree with you support the freedom of GNU/Linux entirely, and that is why I hold it to such high standards of security. GNU/Linux is private, sure, but not secure by default. Please read Madaidan’s article on Linux’s security model and his guide to Linux hardening. I’m personally holding out for such promising alternatives such as (a potentially ungoogled) Fuchsia. Did you know that the FLOSS kernel SeL4 is proven to be correct with mathematical precision? POSIX compliant innovations will someday leave Linux in the dust.