A Google Forms survey with only 78 responses cannot claim to directly inform such precise percentages on identity document verification habits.
Who has an interest in believing that 75% of people prepare in advance and the rest panic at the last minute, based on such a tiny sample?
This kind of "data" more resembles an excuse to sell a miracle solution against holiday stress than reliable information.
Here in Brussels, administrative delays for a passport or ID card can vary greatly from one municipality to another, far beyond what a survey of 78 people can capture.