You can already do that :)
Just feed it to notebook.lm.
It is a google tool, it will even make a podcast for you! LOL.
All the popular tools, Copilot, Gemini, ChatGPT, Claude, have a thing called 'agent', you can create one and feed it documents, in this case your own writing, and then you can ask him any question about that and even ask that agent to write one that will be in your own style, and I or anyone else will never be able to detect that it is your agent writing now and not you :)
People in hive are already doing it. This is old news infact.
Yeah, I know of them. I just won't do it. I would know it isn't me, even if no one else would.
Just had a run-in with Asgarth, who I really like by the way about this today.
Have a read.
https://peakd.com/hive-126075/@azircon/re-asgarth-sriyoe