What I'm running into. All indications are that it should. Apple support tried to trouble shoot, but came up empty and chalked it up to being a bug. Who knows. I'd like it there just as much as on phone, which it does work on.
Is not included on 17.0. Perhaps have been delayed to 17.1.
The release notes does not mention this feature either, which is telling.
Also saying just "Siri" only works for English (US), nothing else.