There are examples from nindalf and freedomben above. Why do people think it? If they see me say "I work at Google" in the comment, and then say some sort of o

There are examples from nindalf and freedomben above. Why do people think it? If they see me say "I work at Google" in the comment, and then say some sort of opinion or recommendation or prediction, they might think that that's an opinion that's widely held or officially promoted within Google, or that the recommendation is something that Google recommends or that the prediction is something Google predicts. The sentence "I work at Google" could be thought of as something I'm invoking to say "I'm an authority believe me", or "I work at Google, so I can provide you info from Google", rather than a disclaimer about a conflict of interest. That's why "I work at Google" is often followed by "but my thoughts are my own".