I wonder if you can ask M to use fewer exclamation points. From the conversations I saw in the article, it's a little too chirpy (or should I say "clippy") for my taste.
I had the same sentiment. Similarly - when I ask Siri what time it is on my new Apple TV, after midnight it always says Zzzz... as if it's judging me for staying up late.
I'm not a huge fan of AIs fake emoting all the time. Occasionally, it's amusing, but all the time it just rubs me the wrong way.