Not those with a semblance of intelligence.
I am sure you think you are all knowing of all things, especially in regards to security check points. I have been around the block a time or two as a LEO and I can inform you that what you call "security theater" does quite a bit to deter incidents at Disney as well as anywhere else. Making the person with ill intent have second thoughts about a soft target is the number one priority at any location. Think of it like having an alarm system clearly marked at your house, or a dog. You would feel bad if the thief robbed your neighbor because their house was an easier target, but you would still be happy it wasn't you.