none of this is about knowing their customer; I find is bizarre people think knowing a single boolean about 18 years of age provides anything they're not getting by finger printing your browser and sharing that fingerprint with an ad network.
This is about reducing liability and making everyone else responsible for their inability to manage their community.
> I find is bizarre people think knowing a single boolean about 18 years of age provides anything
You're hopelessly naive if you think this is all they get out of it.