I am hungarian and haven't heard of this controversy before. I tried to look it up, it hasn't been in any of the major news sources (yet), except for HVG[1] but they are only referencing an article written in a relatively small online magazine[2].
The only real problem I can see with her speach is that she was asked to give a laudation, but gave a more generic speach instead. Laudation seems to be a custom at this book festival. Also it's kind of funny that she stole the first part of her speach from "rory's graduation speach" in Gilmore Girls TV series[3].