I will gladly be the counter-example, then. I program. I'm grumpy. I also, however, write fiction - and have for well over twenty years now.
Writing is a skill I acquired and honed through hard work, diligence, and practice. I would no more cede "creative" control of my stories to a LLM than I would load a MIDI track onto my piano and claim the piano's perfect rendition as my own.
But feel free to characterise I - and others - as "grumpy coders who probably don't write".