Slightly less than half, and the bottom half, so that people just skimming over it will mostly remember the DC operators' problems, not Cloudflare's own. This is very deliberately manipulative.
It is of course possible they've shuffled things around since this was posted but it seems that the first part addresses their system failings.
5th paragraph to the 9th are Cloudflare's "we buggered up" before they get to the power segment. They then continue with the "this is our fault for not being fully HA" after the power bit.
Each to their own, I'm going to read it as a regular old post mortem on this one.
