Years and years ago, Facebook asked me for a picture of my passport when I was trying to recover my password. Obviously, I said, "No". I eventually found the password, but I stopped using Facebook shortly afterwards anyways.
The Internet used to be a domain of handles and alter-egos. Anonymity was cherished because it protected us from (then) mostly imaginary evils. Now that those evils exist, are legion, and are being traded on NASDAQ, we are teaching children to surrender their anonymity and live without masks in a digital panopticon.
We need to revive old-school handles for children and teach them the value of anonymity.