I empathize with the OP, but also - what's the point? The only reason we know the first response is AI is due to the obvious tells, and we're even debating in the comments here if the 2nd response is human or not.

Let's just cede the ground - soon you won't be able to tell if it's AI or not. Then what? What payoff were you hoping for when you thought it was human-to-human that you'll no longer get human-to-AI (when the AI is indistinguishable from human)?

IMO you're going to start using AI instead of your human time. "Claude, send a note about that malformed calendar invite thing - convey my annoyance".

Then that's going to force the companies that DO use humans to respond to switch to AI, because the responses are coming in via AI.

It's an arms race with only 1 conclusion.