The word is, Zuck is going through his midlife crisis (42 yo) and wants a tougher, more driven, and more masculine environment. Zuck has been pro-Trump for a while, and palling around with MMA guys. He's also open to importing 996 culture because of his appreciation of China, which stems from his Chinese wife.

I think he is playing the political game and will be pro who ever is in office to protect his baby