Before convincing oneself, one must consider the worst-case scenario and the conditions that limit applicability.
Although this Google Forms survey of 78 people may provide some insight, it is not a sufficient basis to judge the deep motivations behind identity document verification.
In Germany, for example, early verification of documents is not just a vacation planning issue but a regulatory requirement and a fail-safe against visa problems.
If respondents only traveled within the Schengen area, the pressure would be less, radically changing the interpretation of this precautionary behavior.