Thank you for the time you took to research this question and for sharing your findings and thoughts on this! Yours is the most helpful reply I've received.

If I interpret things correctly, the Google Search Console Beta suggests that the situation is worse than I imagined. I have taken a screen shot that you can view here:

https://antipolygraph.org/graphics/google-search-console-ap-...

As you'll note, over the past 16 months, Google reports 147,000 impressions for the search word "polygraph," with an average position of 8.4, but only 381 total clicks. And the number of impressions and clicks flatlined somewhere around March. What do you make of this?