Note that you also want the "correctly" heard commands, because some of them will have been incorrect. It's frustrating when an assistant gives the "I don't know how to do that", but it's even more frustrating to get "OK, doing (the wrong thing)".
Also, another alternative: provide an actual bug reporting channel. "Hey Google, report that as a bug" "Would you like to attach a transcript of the recent interaction? Here's what the transcript looks like." "Yes."
I'm not sure if humans will then review that feedback of if it goes through a speech to text algorithm first but the mechanism for feedback is there.
I tried to voice my way back to directions, unsuccessfully. I said "Fuck you Google."
"I see that you're upset," followed by some instructions on how to give feedback. While I was driving. It sounded almost exactly like "I'm sorry Dave, I can't help you."
While I like how Ubuntu does it, I actually like better how Fedora does it. Not only do they ask to submit core dumps but gives you the ability to annotate and inspect what gets sent as well as gives you a bug report ID which you can use to follow up on.