Doesn't everyone have those? Like, I'm unlikely to really engage with someone about my health unless they're a doctor or otherwise have some area of expertise. Or if it's just a casual, friendly conversation, to kill some time.
But that wouldn’t be a wise use of time in my opinion. And that’s what they’re ultimately driving at: we all have limited time to expend, so do it in things that matter to you. I believe “matters to you” is a bias.