I think some people just see what they want to see because Williamson looks like such a freakish athlete and seems likable. I didn't see anything in the first half that comes close to what you saw. He looked really slow to me. He looked winded. The only times he looked engaged was when he had a clear path for a dunk.
He got three rebounds in the first half. Three. He got blocked at least three times. The Knicks summer league team has two guys over 220 pounds and two guys taller than 6-9. They have five guys who played on the worst team in the NBA last season. Because of that, they might have seven guys who will play for one of the worst teams in the NBA this season. Knox should be outstanding, and Robinson is a real up-and-comer. And, of course, you have Barrett. But saying you saw Williamson do anything in the first half that leads you to believe he will be abusing Nurk in the manner you say is simply laughable.