I am definitely sure that in the near future Twitter, Facebook, and Google are going to issue their own crypto coins. It will be centralized of course, but the reason will be one, free money. The reason that some of them are banning the crypto advertisements is the close relations they have with banks and monetary institutions. The day that the profit from cryptos will be more of that from banks they will change their mind about them. Just wait and see.
Interesting, it would not be bad if words such as these came a great altenative for large media to adopt the crypto as a way of excution and entertaining among the masses, the speed of transactions and payments will grow 20x compared to today's archaic platforms. In relation to banning ads the two sides lose: Crypto and Media.