I think a lot of work has to be done with society as a whole before we have a chance of that. I don't think that particular problem (sometimes called Eternal September) is inherent to the systems of communication themselves, but really the inherent nature of humans. The same thing will happen in a community of people IRL.

I also find it difficult to see how we could reconcile disparate cultures and ideologies while also unifying as a singular "human culture" that isn't constantly bickering with each other and could actually agree on how to go about doing things. I mean, short of an alien invasion forcing every human being to come together to combat a new threat.