I think this is intentional. By not changing the state of child switches when the service switch turns off, users can restore their customized sharing setting just by turning on the service switch again.

I updated the PR description to include the issue link. If as @ryonakano suggested that we wanted to preserve the user's sharing settings, as an alternative we could just hide the content-grid when the service is disabled.

@tjchester Thank you for quoting the issue link! We seem to need some discussion about the design.

@tjchester Closing as has unaddressed issues and no recent activity. Please feel free to reopen (as draft) if you wish to continue working on it.