Yeah, you're right, but like anywhere else, a few idiots ruin it for everyone else. These areas just say, "Screw it, no knives." I can't blame them, they don't know who is a responsible adult and who isn't.
The EMT shears are a great idea! I would go one step further (and usually do) and attach it to my body with a dummy cord.
You'd be amazed at how many people dive while drunk. It is usually the cause of most accidents, and the post mortems make it into magazines, and are usually pretty humorous. I like it when stupidity is self-correcting.