I think you might be misunderstanding. The semantic line breaks described here are not shown to readers. They are visible only to the person writing/editing the text, as a tool for their own use. If you aren't someone who finds a tool like this useful for your own writing, then no worries! Nobody has been harmed by this existing but not being used. It has no effect on the result.
While I never knew there was a name for this, I naturally do something very similar when writing, keeping thoughts separated by at least a line or two, even if I imagine they'll be in the same paragraph in the end result, just so I have a visual sense of where my different thoughts are and how long they are.
While I never knew there was a name for this, I naturally do something very similar when writing, keeping thoughts separated by at least a line or two, even if I imagine they'll be in the same paragraph in the end result, just so I have a visual sense of where my different thoughts are and how long they are.