Useful feedback thanks.
Yes, It is a backgrounder. I mention the topic occasionally in my journalism and point readers to this rather than explain the ideas at length in a news story.
I'm looking into the dark mode strangeness. I suspect it's because I dropped some HTML and CSS into the page without planning for dark mode (I'm not a coder).
It's interesting that you were both looking for a call to action or similar. I've got a whole bunch of similar backgrounders that are among the most popular posts on my site. None of them make calls. On the other hand there are plenty of posts where I do make judgement calls.