It's well recognized that LLMs have a certain writing style. Most of them follow common patterns like em dashes, 'a, b and c' structures, punch - then expand, 'it's x, rather than y', 'it's not p, it's q', and so on. But with so much content being written by LLMs, including that in research papers - where it's generally permitted to use AI for editing and improving readability, it's quite possible that the way humans write is also changing. With most of the content we consume being AI generated, the influence on our written expression is expected, and in my observation, starting to emerge. As evolved monkeys, most of our learning is through copying. Being quite intelligent, we are able to copy even complex patterns. The same intelligence allows us to adapt, improvise and customize - leading to both similarity and uniqueness in every aspect. (The previous line looks most definitely AI.)
I would expect the adjustment to be mutual, but I don't know whether AI is still learning from us in the way we do from it. But in future, we'll definitely have difficulty figuring out what's AI generated, because with time, NI would start looking like AI. (NI is natural intelligence. I guess I can (can I?) claim the term as the 'natural' counterpart to AI, which existed before AI.)
But the bigger concern is that, perhaps, we may not have any purely NI based writing in some distant future. We'll only be fixing drafts generated by AI based on what we tell them, just like most coders only tweak pre-written code. What we 'tell', and how we do, would be the only pure and natural expression from NI, although not polished to the eventual intended format. It's hard to imagine how that informal expression might change, but it certainly will.
There is still some way to go before we start talking to AI more than we talk to humans. That will have interesting ramifications on how we communicate, not only with AI, but also with other humans. (A close parallel, purely natural, is how American accent(s) came about, although nobody in the source countries of the OG immigrants in America spoke like that. Same goes for Australian accent.)
It's interesting how the various forms of human expression would evolve with AI playing an increasingly central role here on. I'll be watching this closely. And would love to hear what others are observing and experiencing.

