They still seem pretty horrible at writing. Overly complicated prose, weird phrasing, poorly structured paragraphs. I don't know why they're so bad at communicating, but I feel very confident that humans are still much better at writing than any of these LLM models are, regardless of how advanced they are in other areas.
Some humans are much better at writing. Most humans are not. If you think they are, you are luckier than I am when it comes to the humans you need to communicate with.
As a non-native English speaker, I think the current LLMs write better English than me. I still write better than them in my native language (Norwegian), but the same cannot be said about most of my compatriots.
Many people are terrible at writing. LLMs write better than them.
However, many more people are "OK" at writing. But what their writing conveys is personality. Every comment here is written by someone who may not have grammatically perfect writing, but their writing conveys how they talk and think. It conveys what they think is important, and what they brush over. It conveys how much they care about the topic being discussed. Behind each comment is a person. Online forums and discussions are, at their heart, a shared experience of humanity.
LLMs write consistently in the same personality. If your writing is filtered through an LLM, your personality is stripped out. Unless the idea being conveyed is particularly novel or interesting, you might as well not have bothered. Imagine a niche forum where everyone discussing things was speaking through an LLM. It would be BORING.
