My intuition tells me that a simple Google Forms survey is not enough to prove real behavior, especially for important things like trip preparation. It smells like interpreting a stated intention as concrete evidence, and I see this all the time with tenants who promise to read their contract but never do.
This pattern where people say one thing and do another is very common in everyday life, especially when it comes to administrative tasks.
For me to truly believe that 75% of people verify their papers early, there would need to be data showing actual action, such as airlines recording fewer boarding refusals.
Without these concrete verifications, the survey remains an interesting hypothesis, not a certainty.