No, I'm saying that they're interested in something that requires less commitment and ongoing interest than Usenet does. Most web boards work precisely that way. That's way too simplistic an analysis. You're on the right track, but you've got completely the wrong focus.
Web boards are noise.
They're the latest flashy hot thing, most of them are pathetically bad, and they'll stick around because they require absolutely zero investment of understanding or long-term interest in order to participate in. This is not the market niche that Usenet should be aiming for. Which have changed and improved, but I don't think they would have had to in order to still be attractive to people. That's the reason why a lot of people prefer them. Sometimes they try wrong things, sometimes they try right things.