This is a bad move. California has no age verification law, only an age asking law and all of the reasons it's good to ask if the user is over 18 are still good reasons if the OS is Linux. And the penalty for providing an OS that doesn't ask if you're over 18 is that it's considered a defective product and you can return it for a refund, but open source software is already provided for free with no warranty so who cares. Unless you bought it from Red Hat so this is basically just giving Red Hat impunity to violate this law, for no reason.