At a high enough dose, sure. But study after study over the last decade has shown coffee to have a positive effect on everything from diabetes to Alzheimers.
On average coffee is good, but you are not the average man.
This is quite a low amount, i.e., we're frequently consuming it at a dose that is close to or higher than the dose where you see negative effects.
Also, I don't think most people drink more than 2 cups of coffee per day -- if I know someone who drinks more than 2 or 3 I'd think they have a problem.