Agree the functions aren't primarily their tech, but all of their activities ends up serving a business outcome, usually manifested in code (with much distilled or cut along the way). Marketing, PM, and strategy aren't directly shipping slides or docs to production - but they should get distilled into code that ships to fulfill the activity's productivity (decisions, features, etc.).
Yes, have been sent many .MD files that clearly the prompter (too generous to call them authors) didn't read and expect you to read for them. And too many examples of asking a follow up question only for them to just paste my question to their LLM and send another .MD. Total PM malpractice with AI. No tooling will completely fix bad PMs.