All I know is that the Pi-Hole at our house says Facebook domains are blocked way more than anything Google has running (w/o the numbers in front of me, I wouldn't be surprised if it's an order of magnitude difference). And neither one of us has a FB account, that's just from the craplets littering your average web page.

Kudos to FB for posting this in understandable languague. OTOH, it does have the scent of trying to get ahead of $SOMETHING.