Well ... there's a vast difference between "one having paranoia" and "what actions one takes resulting from that".
I prefer my own non-physiological definition of "paranoia": Paranoia is the finely tuned habitual use of what-if intelligence, what-if experience, and what-if scanning so as to get and stay ahead of the curve on possible detrimental events.
With this definition, it only makes sense that all of us RV'ers should be "paranoid" when in unknown places or situations. Taking precautions is way less stress, way less work, and way less expensive than picking up the pieces after a detrimental event.
Due to the long-term U.S. economy now facing us, many folks out and about in the camping world are no longer out there by choice. They may not have the inhibitions that our fellow true-campers have.
We take a few non-stressful seconds to lock everything down a bit and put most things away when not around our campsite.