I am not surprised that Facebook would ban all Crypto ads,
A lot of people lost money buying into crypto lending platforms like bitconnect ( facebook dont want to be liable for anything that may be considered a scam so they put their foot down on everything related to crypto
It's the same reason they don't let you directly promote affiliate links
And steemit could be the end of facebook, once people realize that it is decentralized (no more faceboo jail) plus they have a chance to make money for their baby pictures posts
As soon as the crypro side becaomse as easy to set up as a facebook acount - everyone will switch over