I agree on the last part but it's up to us, the user, to change that. I make a point of sharing food or other RL things as much as Bitcoin related stuff and I believe many others do it too. But yes, the Bitcoin force is strong on nostr. Of course.
Today for example I pretty much enjoyed all the RL pizza notes. Yes it's "Bitcoin" pizza day but it brought more RL content to nostr than on many other days.
I guess I'm try to say it's up to us to push more diverse content on nostr to attract more people.