The battle on the use of language around engineer has long been lost

That's really the core of the issue: We're just having the age-old battle of prescriptivism vs descriptivism again. An "engineer", etymologically, is basically just "a person who comes up with stuff", one who is "ingenious". I'm tempted to say it's you prescriptivists who are making a "battle" out of this.

  subjective creative exercise of writing prompts

Implying that there are no testable results, no objective success or failure states? Come on man.