OP is certainly right that a lot of this legislation is written in ways that are hard to interpret and that often seem like they would have undesirable side effects even under the assumption that the basic idea is good (whether that's actually true is a whole different question).
In the specific case of CA AB1043: (1) Systems are required to ask the user for their age and just trust whatever they say (2) Applications are required to query the system for the user's age range. Other enacted and proposed device-based age assurance mandates have different properties.
This post goes into quite a bit of detail about the various points of concern: https://educatedguesswork.org/posts/device-based-age-assuran...
> Systems are required to ask the user for their age and just trust whatever they say
If you're going to do anything like this, this is the thing they actually get right. It removes the inconvenience, privacy invasion, forced use of corporate verifiers with perverse incentives, etc. Meanwhile if the user is actually a child then their age is set by their parent.
> Applications are required to query the system for the user's age range.
This is classic legislative stupidity. Applications are required to query the user's age range even if they contain no age-restricted content? Brilliant.
I think this legislation is as dumb as everyone else does, but it also seems like the cheapest way for everyone to agree that we did something about the moral panic without actually giving up anything. It doesn’t do anything with ID or privacy or even actual verification. There’s no complicated auth dance to do with government services to verify our age tokens or whatever the latest Rube Goldberg machine “zero knowledge” age check proposal is.
I’ve been shocked at how many HN comments always come out in favor of age related legislation and heavy government regulation when the topic comes up. The pro-regulation commenters always seem to assume the age checks would never apply to them because they don’t have use TikTok or Facebook or other services, yet few realize that there aren’t going to be laws written in a way that only apply to a couple named companies you don’t use anyway. If we age verification laws then they’re going to be everywhere.
I personally hope this legislation dies and we can be done with this silly exercise, but if we’re stuck with age verification moral panic than a simple OS-level switch that we set once and then forget about seems like the least intrusive form of “age verification” we can get away with.