That form can only have been designed by a career bureaucrat with 40 years of experience, inflexible and set in his ways. Witness the fact that not only do you have to date the form, but also state the time you signed it. Everybody knows that every minute counts, so that is truly essential information. Without it the pandemic would wipe out half the plane before arrival.

According to Schiphol.nl

"there are also employees at Schiphol who pay attention to notable health complaints. That's why it's smart to store your health certificate in a convenient place in your hand luggage"

I can picture a scene straight from Monty Python here:

Employee: "Hi, I'm paying attention to notable health complaints, did I just hear you sneeze?"
Passenger: "No, that wasn't me."
Employee: "Did you cough lightly, then?"
Passenger: "I'm very sorry, but I don't have a cough."
Employee: "Do you have have any notable health complaints?"
Passenger: "No, I do not have any such complaints."
Employee: "Can you prove it?"
Passenger: "Sure! Here's my Traveler Public Health Declaration Form.Completed and signed two hours, 17 minutes and 43 seconds ago!"
Employee: "Ah, that's great! Thank you! Thank you so much! That proves you are fit as a fiddle! Should you see anybody else with notable health complaints, please go rat on them straight away at the airport medical services department."

Johan