We mice know not of Facebook plans. However all corporates big and small know they must stay relevant. We doubt they would have not considered a SMT offshoot off their main platform, similarly we doubt they would not have considered their own cryptocurrency platform.

Who knows... perhaps they have started accumulating Steem in multiple accounts or are in talks with Steemit.com to buy 49% of their stake.

Our point is, having never heard this rumour to begin with, is never underestimate what your opponent might do.

Reckon they have bigger things to worry about now anyhow.

PS. The Steem blockchain is a perfect platform for selling user data. Everyone knows everything is open and everything is for sale. Facebook would know this too.