I know the style that most LLM's are mimicking quite well, and I also know people who wrote like that prior to the LLM deluge that is washing over us. The reason people are choosing to make LLMs mimic those behaviours is because it used to be associated with high effort content. The irony is now it si associated with the lowest effort content. The irony is I have stopped proof reading my comments etc. and put zero effort into styling or flow, because right now the only human thing left to do is make low effort content of the like only a human can.