Re: Who is this aimed at?
"Let's assume, as a starting point, that the FBI is not completely stupid."
It could be an arse-covering move. At some point they might need to turn round and point at this and say "well, we did tell you, it's your fault for not taking the advice".
Another possibility is that it's a starting point for mandating features and default configuratons for stuff to be sold to the public.