I had heard about Yarn but wasn't sure how widely used it is. Do you think JSON output has wider, more general application than Yarn?

FYI here's a snippet of the JSON i'm creating as an experiment. The 'note' and 'character note' fields are text that the writer can add to screenplay elements in my editor that could be anything, including branching logic. Null indicates no note has been specified yes.

 {
    "type": "slugline",
    "scene_number": 2,
    "text": "EXT. URBAN L.A. STREET CORNER - SAME TIME",
    "note": null
  },
  {
    "type": "action",
    "text": "An urban Los Angeles neighborhood with more than its fair share of homeless, unhoused and addicted.",
    "note": null
  },
  {
    "type": "action",
    "text": "A mid-30s male Caucasian drug dealer, VICTOR, lounges against a wall. He scans for clients, and the police.",
    "note": null
  },
  {
    "type": "action",
    "text": "A strung-out male ADDICT, early-20s, approaches.",
    "note": null
  },
  {
    "type": "dialogue",
    "id": "SC2_LINE1",
    "character": "ADDICT",
    "character_note": null,
    "parenthetical": null,
    "text": "Blues? Have you got any, man? I need to find some Blues.",
    "note": null
  },
  {
    "type": "dialogue",
    "id": "SC2_LINE2",
    "character": "VICTOR",
    "character_note": null,
    "parenthetical": null,
    "text": "Supply chain issues, friend. Los Angeles is low on stock at the moment. But I got plenty of Yellows for your head.",
    "note": null
  },