I'm not a dad, so these are but grains of salt. What I meant was not that you have the power to force your children out of social media - they're gonna do what they want. More a lead-by-example life where you present an example to them of a life (a social one) that is enhanced by not reacting to what Alice and Bob think. They may see it as out-of-touch. They may change their minds years later. Or not.
So you can break yourself out of the loop. And maybe your kids will be inspired by it. Or maybe it skips a generation.