I respectfully disagree. I had lived in the Black Hills of South Dakota which is said to have the highest density of mountain lions in any area in the United States (estimated at 120) and there has never been an attack even with trail runners and mountain bikers. The biggest difference is that the mountain lions' food source was plentiful in the Black Hills and scarce in California. I think the food source is plentiful enough here to avoid attacks. Even so, I was always a bit weirded out when mountain biking through the Black Hills and I will now be more often glancing over my shoulders.
Like California, Southern New England has a much higher human population density than South Dakota if a an apex predator was to get a little hungry.