I've read an article that they are planning to ban ICO and cryptocurrency advertisement on facebook. I don't know if this is true because a month ago there was a news that Mark Zuckerburg is learning about crypto and planning to integrate it on his works. If the news about banning ICO and cryptocurrency advertisement on facebook, this would really affect marketing because facebook is widely used by people and even crypto enthusiasts.
Maybe FB is almost ready with his project (a token, a blockchain, etc.?) and do want to have no little competitors advertising on his platform...