The main point is that having a single identity can exclude you forever and requirement for the identity in this way is evil - not a norm today, but once states get involved, it is a digital dystopia. Social credit score linked to biometrics, etc.
It is not particularly good at sibyl resistance (get a bunch of homeless people to verify), yet quite an overreach in building and empowering control structures (see above).
For sibyl resistance, we have quite nice tools. For example (drumroll)... payments :). If you just pay for services, sibyl attacking is not a problem. When you pay by watching ads, you are in a complicated territory which ends up in using dystopian tech.
Yes, the tech itself is nice zkp, the design is quite impressive actually. The problem is not how they are doing it, the problem is what they are doing is evil by itself.
Talk starts at 4:58:00 of this video by DrNicka