My instinct tells me that this statement about identity document verification is a bit far-fetched if it is based solely on a Google Forms survey about holiday planning habits.
The whispering suggests that this link between a general survey and such a specific behavior lacks transparency.
We often get the impression that surveys serve as a pretext for conclusions that exceed their actual scope; for example, if the survey asked "When do you verify your documents?" that would be one thing, but if it asked questions about packing suitcases and we infer that, it smells a bit like extrapolation.
What would confirm this statement would be to see the exact question asked in the form and the analysis methodology that allowed drawing these precise percentages.