Although I totally agree that walking the beach at night now is not a good idea, not doing so may actually be self-defeating. If the beach could be somehow better lit encouraging more people to walk on it at night it could be safer for everyone. Leaving it very dark in areas and sparse with tourist makes those who do walk it more of a target.

I am a big guy, 6'3" and 220 lbs. In the past I have walked many long stretches along the cliff road or/and beach, sometimes alone at 2 or 3 in the morning and never once had an issue. However, that was when I was younger. Now I would make sure to arrange for a drive back to my accommodations.