I'm 62 and way way to old for this.
I wonder how much of this social network rage is due to the age of the individuals.
I've developed a number of compartmentalizations in my life and I don't want to merge them all together.
When you're young you may only have 2: family & school friends and you might be idealistic enough to think that you can merge them or that your family is too dumb to look at your social network.
Then you add your work compartment, and then your spouse's compartment and then your children's compartment and then your religious compartment and then your non-school friends compartment and then your lover's compartment and then your hobbyist compartment, etc. etc.
With this many compartments you don't really want all these people to know everything you do or a way for them all to get into contact with each other. Not that the world would end if they do, but why open yourself to comments and probing on stuff that isn't anybody's business except who you choose it to be.
I suppose one could try to keep some compartments insulated from others but for some people that is too much bother or risk.