Your clearly doing it wrong, on the internet your supposed to make a positive claim such as; No blog exists from the pre-llm days that include the llm-isms. And then you wait for the internet trolls to come out of the woodwork and prove you wrong.

You dont ask people on the internet to provide you with some kinda proof because nobody can be bothered, you dont even ask them to prove you wrong because they cant be bothered. You have to confidently and boldly assert your false claim and that will enrage some poor autists somewhere into doing what you want.