Linux /home is far from a free for all. flatpak, landlock, selinux, podman, firejail, apparmor, and systemd sandboxing all exist and can and do apply additional

Linux /home is far from a free for all. flatpak, landlock, selinux, podman, firejail, apparmor, and systemd sandboxing all exist and can and do apply additional restrictions under /home