Claiming that 78 responses are enough to decide between anticipation and anxiety seems to ignore the full picture, especially when we know that people already manage unpredictable delays.
Instead of focusing on a binary choice, we should look at how people incorporate these real constraints into their lives.
For example, some do not check their papers in advance out of negligence, but because they are waiting for a specific validity date or have other urgent matters.
A third way would be to offer personalized reminders for documents, based on type and processing times, not just an arbitrary date.
This takes into account the necessary flexibility and not just the intention.