Don't we have that option on the forum? Look at the "Off-topic section" topics and how much rubbish there is, just as there are a lot of discussions on the "Serious discussion" boards. I do not see the need to discuss the lives of the stars, so they are discussed enough wherever possible. On the contrary, I avoid it, and the forum is the only place where you can take a break from this noise.
I don't think that Bitcoin needs to be popularized in this way; it's more important to have people who purposefully go after knowledge, not to be like their idols.
Well, in our local thread
Pakistan, we discuss everything, which includes crypto plus non-crypto issues/ information too. I guess the local community can contribute much better as compared to the threads like off-topic etc.
I do not know about other local boards but I will agree that you can discuss non-crypto stuff in local threads, and moreover, in local boards, it will be more easily to classify topics as different threads can be made there.
Also, in a local community, you can attract the non-crypto people to your local thread with generic topics and from there groom their interest in cryptocurrencies and bitcoin.