Sorry but I think you just don't know a lot about LLMs. Why did they start spamming code with emojis? It's not because that is what people actually do, something that is in the training data. It's because someone reinforcement learned the LLM to do it by asking clueless people if they prefer code with emojis.
And so at this point the excessive bullet points and similar filler trash is also just an expression of whatever stupid people think they prefer.
Maybe I'm being too harsh and it's not the raters are stupid in this constellation, rather it's the ones thinking you could improve the LLM by asking them to make a few very thin judgements.
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.
And so at this point the excessive bullet points and similar filler trash is also just an expression of whatever stupid people think they prefer.
Maybe I'm being too harsh and it's not the raters are stupid in this constellation, rather it's the ones thinking you could improve the LLM by asking them to make a few very thin judgements.