Don't let perfection be the enemy of good. Security is not all or nothing. Reducing the attack surface is still important.
Can you elaborate on running docker daemon as rootless? It's my understanding that you can add your account to a group to access the docker daemon rootless, but the containers are still running as root, as the daemon itself raises the access to root.
I never said I was relying on it alone. Not sure why you think that.
That's a great link. Thank you for sharing. It's good that docker supports this functionality now.