Interesting. Millions of people have work-related zoom meetings (or publicly posted webinars) while sitting in front of their bookshelves. Many people don't have a problem with that. Some of those books might even be strategically placed so that they are in clear view. You can discern a little about someone's interests by what's on their bookshelves, but perhaps not always accurately.
I wonder how people feel about displaying the contents of their bookshelf online while onscreen? I'm guessing for most people it's not a concern.
Here's Bret Victor's bookshelf from 2015 which we posted himself on his website. Click to zoom: http://worrydream.com/Shelf2015/