Depends on what I'm doing. If I'm grinding through stuff I know exactly how to do, but can't automate away, I find having something like people talking or an audiobook I know well running in the background actually helps me focus. It occupies just enough of my mind that I don't feel tempted to get distracted by the internet.

I have a whole range of preferred noise depending on the task, from dead silence for hard, tricky problems up to what I just described for easy but important detail work. I even know exactly what kind of music I want to listen to for different tasks, and whether or not I want vocals in it.

There is no one-size-fits-all solution to what works for people.