That was one example, and personally, not a strong one. That does not stop one from participating in society. Society is much larger than the single example provided.
I miss neighborhood activities such as coordinated yard sales because I'm not on FB.
I miss out on events from my local Hackerspace because they often forget to post on anything but FB.
I miss out on family reunions because I'm not on FB.
I miss announcements from my kid's fucking school because I'm not on FB.
These are all things that have happened to me, personally. Sure, I'm a single data point, but if the above isn't society enough for you than I'd be interesting in what your definition is.
And now I'm missing out on virtually everything related to my family, my hobbies, the club I helped found.
Yeesh.