> Is Netflix a secret Facebook client that I don't know about? Lmao, is this a serious comment I'm replying to?

Yes, in fact, that's what the feature was. You could send a movie recommendation via Facebook within Netflix, and then continue the conversation with that friend, still in the Netflix app.

It's a dumb idea for all of the obvious reasons that its in Netfix' best interest to hoover up the data, but that's why it doesn't exist anymore and hasn't existed for years.