The multi-axis performance review criteria that requires you to show deliverables on things like your impact on team-building or culture. This means that when you might normally get a couple week low-output time between projects, you are usually looking for something to fill in the non-coding axis, like organizing a team virtual offsite event or searching for a way to improve the codebase.
Organizing team activities and code quality initiatives are a good thing, but the explcitivity in which you need to show deliverable impact on all axis is something I found unique to Meta and very exhausting.