It's punchy. It's short and quippy. It's a good meme as a meme.
That's my problem with it.
Because what it is says is only correct in the context of the blog post and when divorced from that blog post it becomes dangerous.
That's a _terrible_ lede, even if it is likely to draw clicks and views.
From a more general perspective whole disk encryption is _very_ useful, just not against a live attacker on your database (which is the point), but that requires reading the entire blog post.
/fin