I’m familiar with that. Not in quite that way because our app is for roleplaying where there isn’t a prewritten story but we use a database to pull relevant info into context. You can definitely help it, but you need author chops to do it well.
Which means maybe this is a tool that could help good writers write faster, but it won’t make a poor writer into a good one. If for no reason other than you need to know how to steer and correct the output.