> You can create json and sql string template processors that suffer from no injection problems. I'd call that a large improvement over, for example, Javascript.

Bad example. JavaScript literally has that. [1]

  function sql(strings, ...args) {
    // ...
  }

  sql`SELECT * FROM user WHERE email = $1`

[1] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...