I know this comment is a joke, but the CA bill requires age bucketing for to be provided by the OS to “covered stores”. Basically, any source of 3rd party programs.

Since TempleOS (at least, the original one written solely by Terry Davis) has no networking stack, no such “covered store” can exist. I think there’s not even support to load external storage drives, so all programs on the machine are either written by the user or provided first-party by the OS. I think TempleOS would be exempt on those grounds.