I don't think it's that people online need to have more unstructured discussion, or "not get to the point" -- it's that there's no real sense of community in a lot of online spaces. Why would I spend a bunch of time idly having Seinfeldian conversations with strangers with whom I have no rapport or continuity? The vast majority of people who will read my social media comments will be completely invisible to me. All the years of commenting and interacting online have predictably resulted in precisely zero lasting relationships.

If the point of not getting to the point is to build trust, then there has to be a relationship in which that trust is invested. Otherwise, not getting to the point is just more invitation for someone to take issue or dismiss what you're saying, to divert the discussion, or to completely miss the actual points you want to discuss.