Tangentially, SELinux vs AppArmor vs Tomoyo demonstrates a fundamental challenge of the Linux kernel development model, where the kernel is developed independen

Tangentially, SELinux vs AppArmor vs Tomoyo demonstrates a fundamental challenge of the Linux kernel development model, where the kernel is developed independent of userspace, but promises never to break userspace. This leads to everlasting APIs that can never get obsoleted, and on which "New and Improved" API replacements accrete, and then users get confused about which ones to use, and support effort gets divided. I suppose such is the burden of choice.