I am allergic to shiny things, and a Google Forms survey with only 78 responses is anecdotal, not a solid basis to claim that 75% of travelers verify their documents weeks in advance.
What concretely changes tomorrow for a travel operator with this figure? Nothing, because it is not a representative sample of the real world.
In Germany, for example, administrative rigor pushes people to verify their documents well in advance, but that does not come from an online survey.
If the survey mainly included intra-Schengen trips, the motivations and behaviors would be radically different, making any extrapolation of this “information” purely speculative.