> Yes, a question-post invites more engagement than a simple comment, but there’s something else at work here.

Is there?

I've noticed wannabe influencers on Instagram including questions and polls with every one of their Stories. They're doing it to "juice the algorithm" by getting responses. That in turn theoretically gets them featured on the Explore Page or whatever. YouTubers do the same things, ending each video with a CTA question you should answer in the comments.

The Facebook question pages that boomers answer seem to just be doing the same thing, attracting comments and interactions and thus boosting the page.

The bigger question I have is why Facebook thinks I would be interested in seeing in my timeline that my 68 year old aunt has answered "Freddy Mercury" to some question about the best musical act they've seen live.