Developing a voice comes naturally as you go through the pain of being a terrible writer to eventually being mediocre. Accepting the LLM's words is actively harmful to that process because it lets you skip over the part where you read over what you wrote and rewrite until it doesn't suck as much.
I mean, you do you. I'm not your dad.
Clearly I am not a gifted writer as my original comment failed to convey this very well. And now I am pondering, maybe next time I should put my comment in an LLM to review it first. This meta lesson is playing out over and over everywhere by anyone writing anything.
I am in no way saying LLM writing in general is good, but ignoring the reality of what is happening is silly. For good or bad the not great writers not only will, but are doing things like voice rambling into an LLM as a starting point and editing it from there.