well i think they are, there is a rumor that Zuckerberg is investing in bitcoin. And hell yeah they know that it exist.
Well, I think it will not shock me since bitcoin is decentalized, basic and simple If will not be a big deal for them to be part of it since they were knowledgeable in transactions and tradings I think bitcoin will probably not a big part of their whole portfolio and agenda for them to continuously grow and expand their wealths.