It depends what you mean by ‘listening’. If you look at how this actually works - it’s basically only ever looking for a certain waveform
‘Listening’ sort of implies intelligence is paying attention to what is said. It’s more ‘hearing’ than ‘listening’
There are documents on how these activation words work
To look for a certain waveform, wouldn't you need to obtain all of the mic data at all times? I think that's what's implied by "listening" here, but semantics are rarely an interesting discussion.