I think it might be as simple as we don’t encourage it in the apps. Look at how warpcast works. Simply putting it there in the post UI does a lot to change how people post. At the moment groups / channels / communities are a kind neglected part of Nostr.
Yeah needs a lot of love but has so much potential.
Manual classification of notes in this way has great potential, but it also opens the door to easy spam/crosspost, such as tags. I believe that the user should join a specific channel before posting. Groups are a good example of this flow, but notes are segregated and so they lost visibility. Difficult matter.
I agree that this is an area where we should put more effort.
