Facebook hasn`t ban anything. Now current ICO`s simply skip the word ICO, and still advertise as much as possible. You don`t even have to be creative - everyone is spamming, even in posts on walls.
That's true. So far, you'll notice how ICO advertisements are still prevalent in Facebook. I've also heard about this news a few months ago and I haven't seen any changes in the platform of Facebook. Maybe they did change their mind and decided not to push through with banning cryptocurrency advertisements or maybe, this is just really another form of satire. Either way, what matters is that the reputation of cryptocurrency is kept and preserved well. Hopefully what the people are seeing in Facebook's platform has genuine intentions and is not any form of scam.