Except nobody writes like the aggregate, hence why it's so jarring.

The closest actually human style to LLM writing is obnoxious marketing speak. So that also sucks.

So many people who are not great writers lean on LLMs to write, but aren't good enough to see how bad it is. They should be criticised for this. Either use them and be good enough to make it read as human, or just don't use them. No free lunch.