> First time I’ve actually seen someone measure this.

Maybe the actual count but it was in the news back in April

Saying ‘Please’ and ‘Thank You’ to ChatGPT Costs OpenAI ‘Tens of Millions of Dollars’

https://www.entrepreneur.com/business-news/saying-thank-you-...

I'm skeptical of this on two counts...

First, a lot of people I know would never thank a machine regardless of how happy they are with the results. Second, a lot of people habitually say "thank you" regardless of their actual satisfaction level.

Because of these two things, I doubt that whether or not someone says "thank you" is a strong indicator of satisfaction or dissatisfaction.