Yes, that's exactly it. Instead of streaming on Mixer, you will probably be able to do it right on Facebook directly from your console (probably with one button or command only). (While Twitch required some additional setup if I am not wrong).
For me it was so strange that suddenly they unlinked the PSN account and Facebook account and removed the hability to directly post captured videos to facebook.
duduspace11 "Well, since we are estimating costs, Pokemon Red/Blue did cost Nintendo about $50m to make back in 1996"
Mr Puggsly: "Hehe, I said good profit. You said big profit. Frankly, not losing money is what I meant by good. Don't get hung up on semantics"
Azzanation: "PS5 wouldn't sold out at launch without scalpers."