Facebook and Instagram bans Cryptocurrencies ads. I think they are nothing to cryptocurrencies. Facebook users are not great market. It is only few percent of ICO market. I think cryptocurrencies will not die because of them.
With or without Facebook and instagram Ads, cryptocurrency will flourish. There are many alternative social media that are available like Tweeter, Telegram, WhatsUp and so much more. Ban of crypto by Facebook and instagram may affect the market but it will only be temporary.