I've also heard the news, if Facebook prohibits the advertisement of cryptocurrency on the facebook page. but in fact I still find many ads about Cryptocurrency on Facebook. so I doubt the truth of the news.
this is what i have been observing since the news rolls off. i am not sure if that is only FUD because i have been still seeing everywhere ads on my news feeds. and even on facebook messenger , there are ICO's pages there. so agree with you that the news is doubtful.