Don’t worry, the headline is too sensational. (Which is a pet peeve of mine anyway: headlines should be objective. I can make up my own mind please)
He didn’t win a majority. He won’t form a goverment. If he does, he will be powerless in the coalition. If he does get to make laws, they won’t pass the senate (called “1ste kamer” in NL). And if he does, the government will fall anyway (which is a Dutch tradition anyway).