Don't be so hard !
kernel.org has been up and running for over 10 years or so no?
So, with a rough 10 days downtime, that's (1-10/3650) = 99,7% availability in presence of malicious faults.
OK, that figure is going to drop until the site comes up again but, well... I wish other sites had the same result personnally; and the figure will start to go up again as soon as the site comes back online.
Furthermore, 100% availability did not look serious. Enjoy the holiday while that security benchmark finally gets a true run.