With this attempt to normalize biometric identification, soon it will not only be about individually targeted ads as a method to try to sell stuff to people, but also to hold each user accountable for what is posted and commented anywhere. This is bad. An ad at least can be ignored or blocked. But if someone comments or posts or shares anything that goes against any political agenda, this might lead to trouble in real life. Users, who today do not seem to be very concerned about online privacy, probalby will not recognize the implications, until it ts too late.
I suspect that many internet users will provide biometric identification eventually, as I can assume that online services display a "false positive" - a popup that tells the user to perform an age verification, despite the desired content is neither nsfw nor otherwise unsuitable for children.
Those who try to maintain their online anonymity and privacy will be percieved as "sketchy" in the future, because ThEy MuSt HaVe SoMeThInG To HiDe.