There is this one submitter of Giraffes[1], responsible for two percent of all German giraffes, or this one[2], responsible for nearly five percent. I didn’t even have to look all that hard to find them.
[2] "I found 9 988 giraffes created by people named Ediktonia!"
The actual statistic is that 2% of all Germans who submitted giraffes were named Sanne and 5% were named Ediktonia. It doesn't say they were all the same person.
Personally, I think these works are kind of taking the piss.