How do you propose that social media sites verify your age without showing them your ID?

By showing a third party their ID that doesn't share the actual ID with eg, Facebook. That third party would then share their status with Facebook. Facebook doesn't get the ID, but does get to verify that they're of age (or not).

So now the government still has a way to match a user with a real person and we have to trust a third party company with our ID?

And I should have to do that as a 50 year old guy with grown kids for “the children”?

How about if parents are concerned about their kids, they should use the parental controls that are already available.

And this isn’t theoretical for me. I live in Florida.