The strategy that Facebook has been pivoting towards is in favor of smaller community building, rather than the "mass market square" approach, which is why:
1) Groups have been more prominent and getting quite a bit of promotion
2) Messenger has gotten quite a bit of UX improvements
3) New features like "Rooms," which favor small / intimate video conversations
4) Investments in hardware experiences like Portal, which have been heavily marketed towards family communication thus far (successfully it seems, looking at their last revenue #'s.)
5) Facebook Workplace, which was a smart B2B play anyway, but also aligns with their "micro-community" approach
Zuck messaged this new pivot IIRC around the last US presidential election, but it may have started before that. Therefore I would expect to see more of these types of experiences:
"Facebook Campus" - "Facebook Workplace" - "Facebook [TBD]"