Facebook banned advertising for ICOs, token sales, and anything relating to cryptocurrency, bitcoin and altcoin alike. Advertising includes paid campaigns and sponsored posts, including text-only, images, video etc. Nowhere in the press release does it say that organic (free) posts are affected. If you post, share or comment on crypto-related topics without trying to promote your post or launch an ad campaign on the Facebook ad network, you should be fine unless you are spamming.
Some people on the forum reported their posts being removed. This is most likely due to their posts being reported by other users, not deleted automatically by the system because of the recent ad ban. These are two different things.
Writing high-quality posts on Facebook and sharing updates from an ICO Facebook page still works. (For now!)
Yes that is true. But the idea is, if we can avoid being "used" by these scammers it will be better for the community and for crypto-currency in general.
Those organic posts being reported and removed probably people already have a stigma seeing anything related to crypto offerings. Even if the ICO you're promoting is legit, people will instantly think that it's another scam.