The 78 responses of a survey on vacations are a bit light to declare that there are only two types of people regarding identity papers.
It's forgetting a third way, very common here, where one delegates the paperwork to a travel agency or even a family member who manages everything in a few days, avoiding stress and unforeseen events.
Waiting until the last minute can also mean having a well-placed contact who unlocks the situation in a flash, which the survey didn't capture.
A survey based on percentages often forgets alternative solutions and parallel systems that exist in real life.