The author going to silly lengths to write in a way that will be perceived as non-artificial, even though they find those traits (improper capitalization, spelling mistakes, etc.) crude and distasteful. But they ultimately realize that they also need to transform their fundamental writing style, which would supposedly be impossible because it's a reflection of who they are. So the only way to do that, ironically, is to pass their writing through an LLM.

I do not think the author genuinely used an LLM to write the post.