> You're ostracized from digital society. You're not even a citizen, much less a second class citizen.

Before anyone downplays this concern as scaremongering ans slippery slope fallacy stuff, keep in mind that countries are shifting their national ID cars infrastructure to online services which are fundamentally designed around attestation. Moreover some class of services such as banking are progressively increasing requirements that your software and hardware needs to meet to allow you to manage your own property.