Novel writing is like the training ground for emotional intelligence in AIs. Fiction writing itself is not economically important, but the skills learnt from it is.
As a passionate hobby writer myself. I say you should actually go and try the writing tools, sudowrite/verb.ai are examples. Once you start using them, you start realizing how much they suck at writing stories, and your worries will go away. Unlike art AI, fiction writing AI has not really improved significantly. The core challenges are unsolved since the days of GPT-2.
There's also little research money coming in. Having a truthful, helpful, inoffensive AI is the polar opposite of what you want in a story AI, which should be deceitful, aggressive, and offensive.