From the article:
“We believe the Wilkins has been in place for at least a few hundred years, but warm air and exposure to ocean waves are causing it to break up,” Scambos said.
So, did we have more global warming a few hundred years ago, AFTER which the Wilkins formed?
Wilkins was a small outpost named after Hubert Wilkins around 1928 after successfully flying in to land on the ice and then fly out once again.