@Emiel1
Emeil, I made sure I did not allow Airbnb to reduce me to the status of a beggar, and as soon as I got the notification that Airbnb were putting this proposal to my past guests to send some nickels and dimes to help us hosts along, I disabled it immediately via that screenshot link you showed.
I did receive some nice emails from past guests which purported to come with an accompanying card. But even that was half baked. The link to open the card did not work!
This company never ceases to amaze us with the half baked ideas they come up with Emiel.
Cheers........Rob