One of the major reasons for their possible shutdown is their continuous Data breach where they share our data with other giant companies to get paid for the same. Have you read their privacy policy? If yes, tell me are they allowed to do so. On other hand, BTC is pseudonymous and consists all those properties to help you undergo all your finances with ease. Albeit, BTC is a different subject and comes under a category which really can't be compared to social networks as they are about making friends and sharing data, but yeah BTC can also be said to be doing data sharing only through electronic medium but in terms of numbers only but everything under the hood (anonymity). IMHO, I believe these social networks are just a way to make money for the bosses who created them, but the one I use the most is telegram, very clean, sober and easy to use as well as crypto and anonymity-friendly. It's easy to create bots to pay and get paid in crypto over telegram - a facility everyone wanted so far.