It's standard operating procedure for political candidates to declare victory, no matter how small their margin is, before heading into a recount.
But it's a little odd to see a judge who claims to be impartial give short-shrift to a process to ensure the impartiality and accuracy of a vote count:
“We owe Justice Prosser our gratitude for his more than 30 years of public service. Wisconsin voters have spoken and I am grateful for, and humbled by, their confidence and trust. I will be independent and impartial and I will decide cases based on the facts and the law. As I have traveled the State, people tell me they believe partisan politics do not belong in our Courts. I look forward to bringing new blood to the Supreme Court and focusing my energy on the important work Wisconsin residents elect Supreme Court justices to do.”