It is kind of tongue in cheek. At the same time, I checked mine today and saw posts from 2 days ago that weren't displaying 2 days ago. Much doesn't make sense.

I've noticed that those that have have the tighter privacy controls tend to have fewer responses, likes, etc. Those that are opened to friends of friends of friends have more. I'm on the lesser side of things. Some of my friends are networking for jobs, social groups, etc.