I suspect that those who share your viewpoint would mostly not be writers in the first place, and as such, wouldn't write about it to share their viewpoint. So

I suspect that those who share your viewpoint would mostly not be writers in the first place, and as such, wouldn't write about it to share their viewpoint. So you have a closed loop feedback system. Only writers write about writing, and only those who like writing write. I don't disagree with your ideas that it can be counter-productive. However, I'm not convinced that would be the majority perspective. I think the reason why it's not spoken about much is because there's no enforcing others to become writers. It's an individual choice and usually only affects yourself.