I'm allergic to anything shiny, and a online survey of 78 responses cannot deeply explain why people check their identity papers so far in advance.
What actual cash flow or constraint is really impacted by a survey of this size?
It teaches us nothing about cultural pressures or legal obligations that truly change behavior, such as the need to renew a passport before traveling outside the Schengen area.
Without understanding these underlying mechanisms, the information remains superficial and does not prove much about holiday planning.