Too late. They most likely missed the crypto train. Banning crypto ads and accounts damaged their reputation and it wasn't already in a good shape before it.
It will still create some hype however. It still has a name which is worth millions of dollars. Just a name...
it's not true that Facebook is late into the crypto industry, in fact the social platform is most widely used in daily life. This does not rule out the possibility that Facebook cryptocurrency will get popular after bitcoin with the magic touch they apply later.