I'm not surprised at this approach as the CEO has a background in law. I think that, combined with his hubris, shaped the tone of this post from an objective post mortem to a goal of minimizing the damage to Cloudflare itself.
I met Mr. Prince once at a tech conference. I mentioned that I followed him on Twitter, to which he freaked out a little bit and said "Oh I hate that when I run across people who tell me that". When I heard him tell his name to someone else there, he said his last name was "Prince, like King". I suspect that his attitude is prevalent at Cloudflare, and may have shaped not only the source of this issue, but the response to it as well, since CEO's generally influence the culture.