Earlier quoted context omitted.
What do you want the EU to do? Kick Hungary out? EU offers a lot to the Hungarian people in terms of travel, freedom of business, employment etc. In 10 years Orban likely will be gone. In the long run the liberal values of Europe will prevail.
Orban didn't become president by himself. There is social support for his platform and this platform will generate new leaders that will be like him or worse
How does EU "fight" that? By playing for the long run: freedom of movement, cultural exchange, freedom of business. In the long term this leads to a more liberal society, regardless of counter movements.