No, no, there's a feature called "Hey Siri" that lets the owner's voice activate it touch free.
Here's the info page from apple. https://www.apple.com/siri/
It absolutely is on call all the time. I also specified that the "Hey Siri" feature is what I was referring to. It's super cool to be able to set a timer with hands free while baking so you don't have to wash your hands again. :)
That's not what anyone, Apple included, will call Siri.
https://en.wikipedia.org/wiki/Siri
>Siri (/ˈsɪri/ SIRR-ee) is a virtual assistant that is part of Apple Inc.'s iOS, iPadOS, watchOS, macOS, and tvOS operating systems.[1][2] The assistant uses voice queries, gesture based control, focus-tracking and a natural-language user interface to answer questions, make recommendations, and perform actions by delegating requests to a set of Internet services. The software adapts to users' individual language usages, searches, and preferences, with continuing use. Returned results are individualized.