Yeah I saw that like, and lolled. The author does indeed admits his/her mistakes, but proceeds to kinda blame it on AWS anyway.
It's like like saying "look I am no racist but <insert some very bad racist phrase here>".
Everyone makes mistakes, you can either help them not make these mistakes or do nothing and blame it on the users.
AWS's UI is bad. The author's mistake was exacerbated by this, even if it wasn't directly caused by it.