Brady has some friend of his, forget his name, who has been in charge of his Facebook profile all season and posting all of this funny stuff. It's definitely not Brady himself doing it. But it's all hilarious, and paints TFB in a funny light, and he's been absolutely killing it all season.
Brady no doubt approves of all of it, and what I love is Brady's desire to reach out to the fanbase this year.
Between this Facebook resurgence and the recent SI article about his daily regimen, I think he really wants to open up what was once a very carefully controlled and red-roped off life, as he considers the rest of his career and relationship to the fans. His play on the field, from the expletives to the sulkiness, only furthers that notion. Brady is opening up this year more than ever, for whatever reason.
I'd like to think he just wants that ring so badly this year he's just YOLOing.