I know a couple of people whose mental faculties took a sharp nosedive after they started relying on LLMs too much. They might be outliers but just a few years

I know a couple of people whose mental faculties took a sharp nosedive after they started relying on LLMs too much. They might be outliers but just a few years ago I considered them to be really sharp and these days they often struggle with pretty basic reasoning and problem solving.