PnL test: Would you have bet money on this correlation without further evidence?
A survey, even with a certain number of responses, does not guarantee relevance or direct impact on a complex behavior like verifying identity documents.
Simple data collection is not proof of a causal link; it only observes a phenomenon; for example, if a survey is conducted in Switzerland, the accuracy and planning are so ingrained that they will bias the result, but it is not the survey that creates the trend.