Before criticizing your conclusions, let me congratulate you for pointing at collaboration as a crux to successful writing. Writing is about an exchange of ideas, https://virtualagora.us/writing-is-not-about-writing-4c4e738a9da9.

None of the three ways you mention do that. Polemics are a forgotten art. Authors lecture readers. It is unthinkable that one can find articles presenting diverse points of view on the same issue in the same place.

Polemics are where the action is. I wrote several polemics on Medium, none of the authors replied.