This is something I saw coming from a mile away.
First it will start off as "we just need to verify you are old enough to use this website to protect ThE ChiLdReN!". If you oppose it, you're a heartless monster who either doesn't care about children, or even worse you want to harm them.
Then it will be "we just need to make sure you're a human, not a bot". And people will depend it saying we need such a thing to prevent more "ai slop".
Then it will be "we just need to verify it's actually you not a heckin 1337 hax0r!" which was the justification of forced phone verification for everything. If you're against it people just say something along the lines of "why would you be against this, ugh, FiRsT WoRlD ProBlEmS!".
It will be gradual and everyone will eventually accept that they will need to verify their face to do absolutely anything on the internet. Then of course there will eventually be data breaches, then your face will be attached to your online activity. Then for the rest of your life when you apply for jobs a digital background check will pull up the most controversial things you have ever posted on the internet. Good luck with that!