Human communication and reasoning is the end result of billions of years of evolution. I'd be very surprised if LLMs can fundamentally alter it in a few years.

When considering phenomenon like these, I think people seriously underestimate what I'd call the "fashion effect". When a new technology, medium or aesthetic appears, it can have a surprisingly rapid influence on behaviour and discourse. The human social brain seems especially susceptible to novelty in this way.

Because the effects appear so fast and are often so striking, even disturbing, due to their unfamiliarity, it is tempting to imagine that they represent a fundamental transformation and break from the existing technological, social and moral order. And we extrapolate that their rapid growth will continue unchecked in its speed and intensity, eventually crowding out everything that came before it.

But generally this isn't what happens, because often what a lot of what we're seeing is just this new thing occupying the zeitgeist. Eventually, its novelty passes, the underlying norms of human behaviour reassert themselves, and society regresses to the mean. Not completely unchanged, but not as radically transformed as we feared either. The new phenomenon goes from being the latest fashion to overexposed and lame, then either fades away entirely, retreats to a niche, or settles in as just one strand of mainstream civilisational diversity.

LLMs will certainly have an effect on how humans reason and communicate, but the idea that they will so effortlessly reshape it is, in my opinion, rather naive. The comments in this thread alone prove that LLM-speak is already a well-recognised dialect replete with clichés that most people will learn to avoid for fear of looking bad.