Do I count as a DAU/MAU if I just log in daily, or do I need to post/interact with a post?

This is interesting, I'd like to see actual usage stats, rather than sign ups, which can easily be manipulated. Though anecdotal, I've casually surveyed people I know who still have an account, and they all complain about the same thing - not much content, only ads and suggested public posts.
Wonder who is still signing up, or possibly they are clumping it with Instagram users, who use FB's login credentials.

Maybe they don't need efficiency. FB usage has most likely fallen, which probably impacts work loads and revenue generation.