Yes I also heard this news but for me it will not affect the cryptocurrencies. Facebook is just a little part of this industry, yes it helps in promoting the works of an ICO but even though they banned Crypto ads it will still not affect the values of the coin or even the ICO itself. It is because there are still many sites or social media sites that really helps a lot it promoting the projects of the industry and these are twitter and telegram. They are faster and has more participants and interactors than Facebook and I know it will really help the ICO to promote their company.