being able to silence all system services to detect that bump
being able to run stuff in different ways, without a core system component (with and without systemd, as that backdoor only used data when sshd was started via systemd)
having people be perfectionist about performance measurements
having devs test upstream code not shipped to normal distros
And if he was a postgresql dev working on linux but employed by the cheesecake factory it would mean that the cheesecake factory saved linux? or was that rather due to that clever dev, and helped by the platform he worked on?