Frankly, dismantle the media hype: a Google Forms survey on vacation planning does not change how people verify their identity documents.
Precise percentages like 75% cannot be extrapolated from general questions about planning habits, especially not in Germany where rules and folders are king for administration.
What concretely changes tomorrow for a traveler is the legal obligation, not a vague survey.
For example, asking if someone plans their vacation in advance says nothing about whether they verify their passport six months before or the day before departure.