Buy a Mac. You'll see that corporate dream come a reality. Immutable OS partition. Security prompts that can no longer be bypassed. Binary signing requirement. It just keeps getting worse and worse, for a power user.
May be "certified UNIX" (when you look at it funny), but it feels like no freedom-loving UNIX-style system I've ever used.
You can turn all that off if you wanted to. OpenCore Legacy Patcher will build you a kernel with the SIP flag mask set to 0xFF, ie, completely disabled.
May be "certified UNIX" (when you look at it funny), but it feels like no freedom-loving UNIX-style system I've ever used.