I have a theory as to why it’s so difficult for some people to parse.

In Damus old style and Twitter, the line that separates posts is very thin. It was acceptable being this because users used the profile icons that stood out (no text underneath them) to visually determine when a new post was starting.

In new Damus style, since everything bleeds more together, I think the line that separates posts needs to be a bit thicker. Facebook is closer to new Damus style and does this. Might even have a little more padding around post separating line as well.

Examples below on how Twitter does it and how Facebook does it with the thicker line to separate posts: