I understand the point of this, but instead of releasing the code to let people embed it into their sites, you assume they will set up proxying to a random url? No sane person will do that.
But your caution is healthy and it's ok if you don't particiate. Cheers.
Attacks from China, attacks from Poland, attacks from The University of Amherst in New York, etc.
No attack has been successful. At worst they increase the fountain response time. No big deal.