Honestly, I thought it was funny. They can have the prize, it means nothing.
I was born and spent half my life in Sweden. I was a kid when we voted to join the EU, and I remember the discussions very well and all the promises that were made.
You and I both know that the EU is NOT popular in Europe. It has not been what people hoped for. That is why they never bring it up for a referendum - they know they would lose. So yes, it is a joke to give a flimsy prize to the EU when over half of Europeans would vote it down if they could.