Yes it does, Mark has used it for public letters in the past: https://www.facebook.com/notes/mark-zuckerberg/a-letter-to-o...
But this is more of an investor relations thing, so that might've had something to do with it.
Re:Note from Mark Zuckerberg
by WorldMaker on Wednesday April 27, 2016 @05:31PM
(#11584733)
Not that Facebook hasn't tried to have a blogging component before...
Perhaps you should jump to the actual value statement you're making ("Real tech companies shouldn't use X (Wordpress)" or "Real tech companies should use Y")