I dont see it as indulging paranoia. All I have been trying to say is that I sympathize with moms taking their sons, up to age 10, into a ladies room. I don't have boys so I dont have to deal with that scenario. I agree that over age 10 is extreme.
The world is not a nice place and as much as people (including myself) would love to believe that only good people go to family places like
Disneyland, it just is not true. It doesn't make me paranoid. It makes me realistic. I am not afraid that myself or my children will be attacked in a public restroom but I do realize that there is a small chance that it could happen. Just the same as accidents and illnesses can happen. I chose to take precautions with my girls when I am able to, within reason. I understand moms of little boys doing the same. To me, bringing your boy to the ladies room, up to 10 years old, is within reason. Turning a blind eye to the fact that bad things can and do happen anywhere (even rarely) is something I would never be comfortable doing.
And for what it's worth, we have been in a handful of empty Disneyland bathrooms. Not often, but more than once.