Because answering the “why” feels like you’ve achieved something. You all blame Gary, pat yourselves on the back and then go home satisfied.
It’s like when cloudflare does a blog post saying they were out for three days and it was because they let someone slopcode the DNS. How has that achieved anything? It will go down again the following week. The customers want to know how you will prevent it happening again, they don’t really care how entertaining your blog is.