Siri on the new AppleTV will only search the iTunes store. However the Amazon FireTV 4K will voice search any of the streaming services that it supports for the content that you are looking for. The only drawback on the FireTV is IR control. You have to buy an usb ir dongle and teach it commands to use for navigation if you want to add it into a control system or use the $50.00 Fusion Research driver route.
