iOS 27 Screen Time can block Siri AI and keep classic Siri instead

iOS 27 puts a Siri panel inside Screen Time, and it is the one documented way to decide which Siri an iPhone gets and to keep that decision in place. The path is Settings > Screen Time > Content & Privacy Restrictions > Siri, and the four choices there run from blocking Siri outright to allowing Siri AI with individual abilities...